Substitution

Front

What is substitution in mathematics?

Back

Substitution is a method of replacing a variable with a specific value or another expression to simplify or solve an equation.

Front

If f = 4, what is the value of 3f?

Back

12

Front

If g = 9, what is the value of g + 11?

Back

20

Front

What is the purpose of using substitution in solving equations?

Back

The purpose of substitution is to simplify expressions and make it easier to solve equations by replacing variables with known values.

Front

How do you evaluate an expression using substitution?

Back

To evaluate an expression using substitution, replace the variable in the expression with the given value and then perform the arithmetic operations.

Front

What is the result of substituting x = 5 into the expression 2x + 3?

Back

13

Front

If a = 2 and b = 3, what is the value of 4a + 5b?

Back

29

Front

What is the value of the expression 2f - 3 when f = 4?

Back

5

Front

If x = 10, what is the value of x/2 + 7?

Back

12

Front

What does it mean to solve for a variable?

Back

To solve for a variable means to isolate the variable on one side of the equation to find its value.