2(A-30)+B=180

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Solution for 2(A-30)+B=180 equation:


Simplifying
2(A + -30) + B = 180

Reorder the terms:
2(-30 + A) + B = 180
(-30 * 2 + A * 2) + B = 180
(-60 + 2A) + B = 180

Solving
-60 + 2A + B = 180

Solving for variable 'A'.

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

Add '60' to each side of the equation.
-60 + 2A + 60 + B = 180 + 60

Reorder the terms:
-60 + 60 + 2A + B = 180 + 60

Combine like terms: -60 + 60 = 0
0 + 2A + B = 180 + 60
2A + B = 180 + 60

Combine like terms: 180 + 60 = 240
2A + B = 240

Add '-1B' to each side of the equation.
2A + B + -1B = 240 + -1B

Combine like terms: B + -1B = 0
2A + 0 = 240 + -1B
2A = 240 + -1B

Divide each side by '2'.
A = 120 + -0.5B

Simplifying
A = 120 + -0.5B

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