Home > MC2 > Chapter 7 > Lesson 7.1.1 > Problem 7-9
7-9.
Solve the equations below for the variable. Be sure to check your answer. Homework Help ✎
3(2x – 1) + 2 = 5x
600x + 200 = 500x
Distrubute.
Combine like terms.
Subtract 5x from each side.
Add 1 to each side.
3(2x) − 3(1) + 2 = 5x
6x − 3 + 2 = 5x
6x − 1 = 5x
−5x + 6x − 1 = 5x −5x
x − 1 = 0
x − 1 = 0 +1 +1
x = 1
Divide each term by 100.
Substitute 1 back into the original equation to check your answer.
3(2(1) − 1) + 2 = 5(1)
When you simplify this expression, do you get the same values on each side?