7a+2=5a-7

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Solution for 7a+2=5a-7 equation:


Simplifying
7a + 2 = 5a + -7

Reorder the terms:
2 + 7a = 5a + -7

Reorder the terms:
2 + 7a = -7 + 5a

Solving
2 + 7a = -7 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
2 + 7a + -5a = -7 + 5a + -5a

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

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

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

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

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

Divide each side by '2'.
a = -4.5

Simplifying
a = -4.5

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