(4a-5)+a-7=4

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Solution for (4a-5)+a-7=4 equation:


Simplifying
(4a + -5) + a + -7 = 4

Reorder the terms:
(-5 + 4a) + a + -7 = 4

Remove parenthesis around (-5 + 4a)
-5 + 4a + a + -7 = 4

Reorder the terms:
-5 + -7 + 4a + a = 4

Combine like terms: -5 + -7 = -12
-12 + 4a + a = 4

Combine like terms: 4a + a = 5a
-12 + 5a = 4

Solving
-12 + 5a = 4

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 5a = 4 + 12

Combine like terms: -12 + 12 = 0
0 + 5a = 4 + 12
5a = 4 + 12

Combine like terms: 4 + 12 = 16
5a = 16

Divide each side by '5'.
a = 3.2

Simplifying
a = 3.2

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