2a+2=7a-9

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


Simplifying
2a + 2 = 7a + -9

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

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

Solving
2 + 2a = -9 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
2 + 2a + -7a = -9 + 7a + -7a

Combine like terms: 2a + -7a = -5a
2 + -5a = -9 + 7a + -7a

Combine like terms: 7a + -7a = 0
2 + -5a = -9 + 0
2 + -5a = -9

Add '-2' to each side of the equation.
2 + -2 + -5a = -9 + -2

Combine like terms: 2 + -2 = 0
0 + -5a = -9 + -2
-5a = -9 + -2

Combine like terms: -9 + -2 = -11
-5a = -11

Divide each side by '-5'.
a = 2.2

Simplifying
a = 2.2

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