2(90-a)+(a+10)=90

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Solution for 2(90-a)+(a+10)=90 equation:


Simplifying
2(90 + -1a) + (a + 10) = 90
(90 * 2 + -1a * 2) + (a + 10) = 90
(180 + -2a) + (a + 10) = 90

Reorder the terms:
180 + -2a + (10 + a) = 90

Remove parenthesis around (10 + a)
180 + -2a + 10 + a = 90

Reorder the terms:
180 + 10 + -2a + a = 90

Combine like terms: 180 + 10 = 190
190 + -2a + a = 90

Combine like terms: -2a + a = -1a
190 + -1a = 90

Solving
190 + -1a = 90

Solving for variable 'a'.

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

Add '-190' to each side of the equation.
190 + -190 + -1a = 90 + -190

Combine like terms: 190 + -190 = 0
0 + -1a = 90 + -190
-1a = 90 + -190

Combine like terms: 90 + -190 = -100
-1a = -100

Divide each side by '-1'.
a = 100

Simplifying
a = 100

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