40x-(12-x)50=120

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Solution for 40x-(12-x)50=120 equation:


Simplifying
40x + -1(12 + -1x) * 50 = 120

Reorder the terms for easier multiplication:
40x + -1 * 50(12 + -1x) = 120

Multiply -1 * 50
40x + -50(12 + -1x) = 120
40x + (12 * -50 + -1x * -50) = 120
40x + (-600 + 50x) = 120

Reorder the terms:
-600 + 40x + 50x = 120

Combine like terms: 40x + 50x = 90x
-600 + 90x = 120

Solving
-600 + 90x = 120

Solving for variable 'x'.

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

Add '600' to each side of the equation.
-600 + 600 + 90x = 120 + 600

Combine like terms: -600 + 600 = 0
0 + 90x = 120 + 600
90x = 120 + 600

Combine like terms: 120 + 600 = 720
90x = 720

Divide each side by '90'.
x = 8

Simplifying
x = 8

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