A+90-15=120

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Solution for A+90-15=120 equation: 


Simplifying
A + 90 + -15 = 120

Reorder the terms:
90 + -15 + A = 120

Combine like terms: 90 + -15 = 75
75 + A = 120

Solving
75 + A = 120

Solving for variable 'A'.

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

Add '-75' to each side of the equation.
75 + -75 + A = 120 + -75

Combine like terms: 75 + -75 = 0
0 + A = 120 + -75
A = 120 + -75

Combine like terms: 120 + -75 = 45
A = 45

Simplifying
A = 45

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