3(x+7)=4(x-1)

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Solution for 3(x+7)=4(x-1) equation:


Simplifying
3(x + 7) = 4(x + -1)

Reorder the terms:
3(7 + x) = 4(x + -1)
(7 * 3 + x * 3) = 4(x + -1)
(21 + 3x) = 4(x + -1)

Reorder the terms:
21 + 3x = 4(-1 + x)
21 + 3x = (-1 * 4 + x * 4)
21 + 3x = (-4 + 4x)

Solving
21 + 3x = -4 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.
21 + 3x + -4x = -4 + 4x + -4x

Combine like terms: 3x + -4x = -1x
21 + -1x = -4 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + -1x = -4 + 0
21 + -1x = -4

Add '-21' to each side of the equation.
21 + -21 + -1x = -4 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = -4 + -21
-1x = -4 + -21

Combine like terms: -4 + -21 = -25
-1x = -25

Divide each side by '-1'.
x = 25

Simplifying
x = 25

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