2a+7=9-4

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Solution for 2a+7=9-4 equation: 


Simplifying
2a + 7 = 9 + -4

Reorder the terms:
7 + 2a = 9 + -4

Combine like terms: 9 + -4 = 5
7 + 2a = 5

Solving
7 + 2a = 5

Solving for variable 'a'.

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

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

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

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

Divide each side by '2'.
a = -1

Simplifying
a = -1

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