3a-4=-7

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Solution for 3a-4=-7 equation: 


Simplifying
3a + -4 = -7

Reorder the terms:
-4 + 3a = -7

Solving
-4 + 3a = -7

Solving for variable 'a'.

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

Add '4' to each side of the equation.
-4 + 4 + 3a = -7 + 4

Combine like terms: -4 + 4 = 0
0 + 3a = -7 + 4
3a = -7 + 4

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

Divide each side by '3'.
a = -1

Simplifying
a = -1

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