40=4(a-5)

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Solution for 40=4(a-5) equation: 


Simplifying
40 = 4(a + -5)

Reorder the terms:
40 = 4(-5 + a)
40 = (-5 * 4 + a * 4)
40 = (-20 + 4a)

Solving
40 = -20 + 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.
40 + -4a = -20 + 4a + -4a

Combine like terms: 4a + -4a = 0
40 + -4a = -20 + 0
40 + -4a = -20

Add '-40' to each side of the equation.
40 + -40 + -4a = -20 + -40

Combine like terms: 40 + -40 = 0
0 + -4a = -20 + -40
-4a = -20 + -40

Combine like terms: -20 + -40 = -60
-4a = -60

Divide each side by '-4'.
a = 15

Simplifying
a = 15

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