Substitution

Front

What is substitution in mathematics?

Back

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

Front

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

Back

34

Front

If y = 7, what is the value of 2(y + 4)?

Back

22

Front

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

Back

2

Front

If p = 3 and q = 5, what is p + q + 2?

Back

10

Front

If a = 4 and b = 6, what is the value of 3a + 5b?

Back

42

Front

What is the first step in solving an equation using substitution?

Back

Identify the value of the variable to be substituted.

Front

How do you evaluate an expression after substitution?

Back

Replace the variable with its value and perform the arithmetic operations.

Front

What is the value of 2x + 3 if x = 4?

Back

11

Front

If x = 2 and y = 3, what is the value of 4x + 5y?

Back

29