4(7-x)=7-3x

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


Simplifying
4(7 + -1x) = 7 + -3x
(7 * 4 + -1x * 4) = 7 + -3x
(28 + -4x) = 7 + -3x

Solving
28 + -4x = 7 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
28 + -4x + 3x = 7 + -3x + 3x

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

Combine like terms: -3x + 3x = 0
28 + -1x = 7 + 0
28 + -1x = 7

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

Combine like terms: 28 + -28 = 0
0 + -1x = 7 + -28
-1x = 7 + -28

Combine like terms: 7 + -28 = -21
-1x = -21

Divide each side by '-1'.
x = 21

Simplifying
x = 21

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