3-a=2a+7

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Solution for 3-a=2a+7 equation:


Simplifying
3 + -1a = 2a + 7

Reorder the terms:
3 + -1a = 7 + 2a

Solving
3 + -1a = 7 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
3 + -1a + -2a = 7 + 2a + -2a

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

Combine like terms: 2a + -2a = 0
3 + -3a = 7 + 0
3 + -3a = 7

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

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

Combine like terms: 7 + -3 = 4
-3a = 4

Divide each side by '-3'.
a = -1.333333333

Simplifying
a = -1.333333333

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