Substitution

Front

What is substitution in mathematics?

Back

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

Front

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

Back

22

Front

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

Back

11

Front

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

Back

42

Front

If h=7, what is the value of h^2?

Back

49

Front

If c=5, what is the value of 2c?

Back

10

Front

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

Back

Identify the variable to be substituted and its corresponding value.

Front

How do you evaluate an expression with multiple variables?

Back

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

Front

What is the result of substituting x=3 into the expression 4x + 2?

Back

14

Front

How can substitution be used to solve for an unknown variable?

Back

By replacing known values in an equation, you can isolate the unknown variable and solve for it.