Solve 7x - 9 - 4 (x - 1) = 28

x = 11

Step-by-step explanation:

7x - 9 - 4 (x - 1) = 28

Simplify

7x + - 9 + - 4 (x + - 1) = 28

Distribute 4:

7x + - 9 + -4x + 4 = 28

Combine like terms: - 9 + 4 = - 5

-5 + 7x + - 4x = 28

Combine like terms: 7x + - 4x = 3x

-5 + 3x = 28

Solve

-5 + 3x = 28

Solving for variable 'x'.

Add '5' to each side of the equation to cancel out the - 5

-5 + 5 + 3x = 28 + 5

Combine like terms: 28 + 5 = 33

3x = 33

Divide each side by '3'.

x = 11

x=11

Step-by-step explanation:

7x-9-4 (x-1) = 28

7x-9-4x+4=28

3x-9+4=28

3x-5=28

3x-5+5=28+5

3x=33

3x/3=33/3

x=11