7-4a=5(a-4)

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


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

Reorder the terms:
7 + -4a = 5(-4 + a)
7 + -4a = (-4 * 5 + a * 5)
7 + -4a = (-20 + 5a)

Solving
7 + -4a = -20 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
7 + -4a + -5a = -20 + 5a + -5a

Combine like terms: -4a + -5a = -9a
7 + -9a = -20 + 5a + -5a

Combine like terms: 5a + -5a = 0
7 + -9a = -20 + 0
7 + -9a = -20

Add '-7' to each side of the equation.
7 + -7 + -9a = -20 + -7

Combine like terms: 7 + -7 = 0
0 + -9a = -20 + -7
-9a = -20 + -7

Combine like terms: -20 + -7 = -27
-9a = -27

Divide each side by '-9'.
a = 3

Simplifying
a = 3

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