a+10+5(90-a)=180

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Solution for a+10+5(90-a)=180 equation:


Simplifying
a + 10 + 5(90 + -1a) = 180
a + 10 + (90 * 5 + -1a * 5) = 180
a + 10 + (450 + -5a) = 180

Reorder the terms:
10 + 450 + a + -5a = 180

Combine like terms: 10 + 450 = 460
460 + a + -5a = 180

Combine like terms: a + -5a = -4a
460 + -4a = 180

Solving
460 + -4a = 180

Solving for variable 'a'.

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

Add '-460' to each side of the equation.
460 + -460 + -4a = 180 + -460

Combine like terms: 460 + -460 = 0
0 + -4a = 180 + -460
-4a = 180 + -460

Combine like terms: 180 + -460 = -280
-4a = -280

Divide each side by '-4'.
a = 70

Simplifying
a = 70

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