7a-15=4a-3

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Solution for 7a-15=4a-3 equation:


Simplifying
7a + -15 = 4a + -3

Reorder the terms:
-15 + 7a = 4a + -3

Reorder the terms:
-15 + 7a = -3 + 4a

Solving
-15 + 7a = -3 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-15 + 7a + -4a = -3 + 4a + -4a

Combine like terms: 7a + -4a = 3a
-15 + 3a = -3 + 4a + -4a

Combine like terms: 4a + -4a = 0
-15 + 3a = -3 + 0
-15 + 3a = -3

Add '15' to each side of the equation.
-15 + 15 + 3a = -3 + 15

Combine like terms: -15 + 15 = 0
0 + 3a = -3 + 15
3a = -3 + 15

Combine like terms: -3 + 15 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4

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