(90-2a)(2+1)-2=-2

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Solution for (90-2a)(2+1)-2=-2 equation:


Simplifying
(90 + -2a)(2 + 1) + -2 = -2

Combine like terms: 2 + 1 = 3
(90 + -2a)(3) + -2 = -2

Reorder the terms for easier multiplication:
3(90 + -2a) + -2 = -2
(90 * 3 + -2a * 3) + -2 = -2
(270 + -6a) + -2 = -2

Reorder the terms:
270 + -2 + -6a = -2

Combine like terms: 270 + -2 = 268
268 + -6a = -2

Solving
268 + -6a = -2

Solving for variable 'a'.

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

Add '-268' to each side of the equation.
268 + -268 + -6a = -2 + -268

Combine like terms: 268 + -268 = 0
0 + -6a = -2 + -268
-6a = -2 + -268

Combine like terms: -2 + -268 = -270
-6a = -270

Divide each side by '-6'.
a = 45

Simplifying
a = 45

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