3a-4=7a

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Solution for 3a-4=7a equation:


Simplifying
3a + -4 = 7a

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

Solving
-4 + 3a = 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.
-4 + 3a + -7a = 7a + -7a

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

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

Add '4' to each side of the equation.
-4 + 4 + -4a = 0 + 4

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

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

Divide each side by '-4'.
a = -1

Simplifying
a = -1

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