120+100+120+x+(x+10)=720

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Solution for 120+100+120+x+(x+10)=720 equation:


Simplifying
120 + 100 + 120 + x + (x + 10) = 720

Reorder the terms:
120 + 100 + 120 + x + (10 + x) = 720

Remove parenthesis around (10 + x)
120 + 100 + 120 + x + 10 + x = 720

Reorder the terms:
120 + 100 + 120 + 10 + x + x = 720

Combine like terms: 120 + 100 = 220
220 + 120 + 10 + x + x = 720

Combine like terms: 220 + 120 = 340
340 + 10 + x + x = 720

Combine like terms: 340 + 10 = 350
350 + x + x = 720

Combine like terms: x + x = 2x
350 + 2x = 720

Solving
350 + 2x = 720

Solving for variable 'x'.

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

Add '-350' to each side of the equation.
350 + -350 + 2x = 720 + -350

Combine like terms: 350 + -350 = 0
0 + 2x = 720 + -350
2x = 720 + -350

Combine like terms: 720 + -350 = 370
2x = 370

Divide each side by '2'.
x = 185

Simplifying
x = 185

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