a-4=3a-7

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Solution for a-4=3a-7 equation:


Simplifying
a + -4 = 3a + -7

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

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

Solving
-4 + a = -7 + 3a

Solving for variable 'a'.

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

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

Combine like terms: a + -3a = -2a
-4 + -2a = -7 + 3a + -3a

Combine like terms: 3a + -3a = 0
-4 + -2a = -7 + 0
-4 + -2a = -7

Add '4' to each side of the equation.
-4 + 4 + -2a = -7 + 4

Combine like terms: -4 + 4 = 0
0 + -2a = -7 + 4
-2a = -7 + 4

Combine like terms: -7 + 4 = -3
-2a = -3

Divide each side by '-2'.
a = 1.5

Simplifying
a = 1.5

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