45=3x-(7-x)

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Solution for 45=3x-(7-x) equation:


Simplifying
45 = 3x + -1(7 + -1x)
45 = 3x + (7 * -1 + -1x * -1)
45 = 3x + (-7 + 1x)

Reorder the terms:
45 = -7 + 3x + 1x

Combine like terms: 3x + 1x = 4x
45 = -7 + 4x

Solving
45 = -7 + 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.
45 + -4x = -7 + 4x + -4x

Combine like terms: 4x + -4x = 0
45 + -4x = -7 + 0
45 + -4x = -7

Add '-45' to each side of the equation.
45 + -45 + -4x = -7 + -45

Combine like terms: 45 + -45 = 0
0 + -4x = -7 + -45
-4x = -7 + -45

Combine like terms: -7 + -45 = -52
-4x = -52

Divide each side by '-4'.
x = 13

Simplifying
x = 13

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