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

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


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

Combine like terms: 10 + 450 = 460
180 + -1a = 460 + -5a

Solving
180 + -1a = 460 + -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
180 + -1a + 5a = 460 + -5a + 5a

Combine like terms: -1a + 5a = 4a
180 + 4a = 460 + -5a + 5a

Combine like terms: -5a + 5a = 0
180 + 4a = 460 + 0
180 + 4a = 460

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

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

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

Divide each side by '4'.
a = 70

Simplifying
a = 70

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