Answer:

Step-by-step explanation:

4x - 1 = 3(x + 1)

4x - 1 = 3x + 3 [remove the parentheses by multiplying each term by 3]

4x = 3x + 4 [add 1 to both sides]

1x = 4 [Subtract 3x from both sides]

x = 4


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Try it:


4x - 1 = 3(x + 1): ??

4*4 - 1 = 3(4 + 1) ??

15 = 3(5)

15 = 15 yes