-2a+7=a+20

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Solution for -2a+7=a+20 equation:


Simplifying
-2a + 7 = a + 20

Reorder the terms:
7 + -2a = a + 20

Reorder the terms:
7 + -2a = 20 + a

Solving
7 + -2a = 20 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
7 + -2a + -1a = 20 + a + -1a

Combine like terms: -2a + -1a = -3a
7 + -3a = 20 + a + -1a

Combine like terms: a + -1a = 0
7 + -3a = 20 + 0
7 + -3a = 20

Add '-7' to each side of the equation.
7 + -7 + -3a = 20 + -7

Combine like terms: 7 + -7 = 0
0 + -3a = 20 + -7
-3a = 20 + -7

Combine like terms: 20 + -7 = 13
-3a = 13

Divide each side by '-3'.
a = -4.333333333

Simplifying
a = -4.333333333

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