Answer:
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
Answer:
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
