4(a+5)=5(a-2)

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Solution for 4(a+5)=5(a-2) equation:


Simplifying
4(a + 5) = 5(a + -2)

Reorder the terms:
4(5 + a) = 5(a + -2)
(5 * 4 + a * 4) = 5(a + -2)
(20 + 4a) = 5(a + -2)

Reorder the terms:
20 + 4a = 5(-2 + a)
20 + 4a = (-2 * 5 + a * 5)
20 + 4a = (-10 + 5a)

Solving
20 + 4a = -10 + 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.
20 + 4a + -5a = -10 + 5a + -5a

Combine like terms: 4a + -5a = -1a
20 + -1a = -10 + 5a + -5a

Combine like terms: 5a + -5a = 0
20 + -1a = -10 + 0
20 + -1a = -10

Add '-20' to each side of the equation.
20 + -20 + -1a = -10 + -20

Combine like terms: 20 + -20 = 0
0 + -1a = -10 + -20
-1a = -10 + -20

Combine like terms: -10 + -20 = -30
-1a = -30

Divide each side by '-1'.
a = 30

Simplifying
a = 30

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