3x-4(x-7)=7x+20

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Solution for 3x-4(x-7)=7x+20 equation:


Simplifying
3x + -4(x + -7) = 7x + 20

Reorder the terms:
3x + -4(-7 + x) = 7x + 20
3x + (-7 * -4 + x * -4) = 7x + 20
3x + (28 + -4x) = 7x + 20

Reorder the terms:
28 + 3x + -4x = 7x + 20

Combine like terms: 3x + -4x = -1x
28 + -1x = 7x + 20

Reorder the terms:
28 + -1x = 20 + 7x

Solving
28 + -1x = 20 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
28 + -1x + -7x = 20 + 7x + -7x

Combine like terms: -1x + -7x = -8x
28 + -8x = 20 + 7x + -7x

Combine like terms: 7x + -7x = 0
28 + -8x = 20 + 0
28 + -8x = 20

Add '-28' to each side of the equation.
28 + -28 + -8x = 20 + -28

Combine like terms: 28 + -28 = 0
0 + -8x = 20 + -28
-8x = 20 + -28

Combine like terms: 20 + -28 = -8
-8x = -8

Divide each side by '-8'.
x = 1

Simplifying
x = 1

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