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 expression or solve an equation.

Front

If a = 3, b = 4, what is 2a + 3b?

Back

18

Front

If p = 3 and q = 5, find p + q + 2.

Back

10

Front

If y = 4, find the value of 3y + 5.

Back

17

Front

Evaluate u + xy, for u = 18, x = 10, and y = 8.

Back

98

Front

If a = 4, b = 5, and c = 6, find 2c - a - b.

Back

3

Front

What is the value of x if 2x + 3 = 11?

Back

4

Front

If m = 7, what is the value of 5m - 2?

Back

33

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 numbers.

Front

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

Back

27