Question
Here is the question : GRADE 7: IF X = 8 AND Y = 10, WHAT IS 3X + 2Y?
Option
Here is the option for the question :
- 18
- 44
- 72
- 103
The Answer:
And, the answer for the the question is :
Explanation:
In the seventh grade, pupils are exposed to simple algebra, which teaches them how to change letters for numbers.
In Grade 7 mathematics, students encounter the concept of algebraic expressions and learn to evaluate them using specific values. Algebraic expressions involve variables, which are letters or symbols that represent unknown quantities. By substituting given values into the variables, we can determine the value of the entire expression. Let’s explore an example involving the evaluation of an algebraic expression: finding the value of 3x + 2y when x is 8 and y is 10. By substituting the given values into the expression and performing the necessary calculations, we find that the value of 3x + 2y is 44.
In this problem, we are given the values of x and y: x = 8 and y = 10. We are asked to find the value of the expression 3x + 2y.
To evaluate this expression, we substitute the given values into the variables and perform the calculations:
Substitute x = 8 and y = 10 into the expression: 3(8) + 2(10).
Simplify the multiplication: 24 + 20.
Add the resulting values: 24 + 20 = 44.
Hence, the value of the expression 3x + 2y, when x = 8 and y = 10, is determined to be 44.
Understanding how to evaluate algebraic expressions is crucial as it allows us to determine the value of an expression when we know the values of the variables. Grade 7 students who develop a solid understanding of algebraic expressions lay the foundation for more advanced algebraic concepts, equations, and problem-solving strategies.
Algebraic expressions are encountered in various real-life situations. They are used in mathematical modeling, scientific calculations, and financial analysis, among other areas. By mastering the evaluation of algebraic expressions, students develop the ability to solve real-world problems and analyze quantitative information.
Furthermore, understanding algebraic expressions enhances students’ logical reasoning and critical thinking skills. It enables them to manipulate and analyze mathematical symbols, identify patterns, and make connections between different mathematical concepts. By studying algebraic expressions, students also gain a deeper understanding of the underlying structure of mathematics.
algebraic expressions can be simplified, combined, and solved for specific variables. Understanding these operations further expands students’ mathematical toolkit and equips them with valuable problem-solving skills.
in Grade 7 mathematics, evaluating algebraic expressions is an important skill. By substituting given values into the variables and performing the necessary calculations, we can determine the value of an expression. In the case of the expression 3x + 2y, with x = 8 and y = 10, the value is found to be 44. Mastering the evaluation of algebraic expressions not only improves mathematical proficiency but also enhances students’ ability to solve problems and apply mathematical concepts in various real-world contexts.