2a-9=7(-2+2a)-7

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Solution for 2a-9=7(-2+2a)-7 equation:


Simplifying
2a + -9 = 7(-2 + 2a) + -7

Reorder the terms:
-9 + 2a = 7(-2 + 2a) + -7
-9 + 2a = (-2 * 7 + 2a * 7) + -7
-9 + 2a = (-14 + 14a) + -7

Reorder the terms:
-9 + 2a = -14 + -7 + 14a

Combine like terms: -14 + -7 = -21
-9 + 2a = -21 + 14a

Solving
-9 + 2a = -21 + 14a

Solving for variable 'a'.

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

Add '-14a' to each side of the equation.
-9 + 2a + -14a = -21 + 14a + -14a

Combine like terms: 2a + -14a = -12a
-9 + -12a = -21 + 14a + -14a

Combine like terms: 14a + -14a = 0
-9 + -12a = -21 + 0
-9 + -12a = -21

Add '9' to each side of the equation.
-9 + 9 + -12a = -21 + 9

Combine like terms: -9 + 9 = 0
0 + -12a = -21 + 9
-12a = -21 + 9

Combine like terms: -21 + 9 = -12
-12a = -12

Divide each side by '-12'.
a = 1

Simplifying
a = 1

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