Substitution

Front

What is substitution in mathematics?

Back

Substitution is the process of replacing a variable with a number or another expression to evaluate an equation or expression.

Front

If a = 6 and b = 7, what is the value of 15 - a - b?

Back

2

Front

How do you solve an expression with multiple variables?

Back

Substitute the values of the variables into the expression and then perform the arithmetic operations.

Front

If y = 4, what is the value of 3y + 5?

Back

17

Front

What is the first step in solving an equation?

Back

Identify and substitute the values of the variables.

Front

If j = 4, what is the value of 2j + 3?

Back

11

Front

If x = 5, what is the value of 7x - 1?

Back

34

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their respective values.

Front

What is the value of 8a + (a - b) when a = 7 and b = 4?

Back

59

Front

What is the purpose of using parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.