4(2a+5)+5(a-2)=0

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Solution for 4(2a+5)+5(a-2)=0 equation:


Simplifying
4(2a + 5) + 5(a + -2) = 0

Reorder the terms:
4(5 + 2a) + 5(a + -2) = 0
(5 * 4 + 2a * 4) + 5(a + -2) = 0
(20 + 8a) + 5(a + -2) = 0

Reorder the terms:
20 + 8a + 5(-2 + a) = 0
20 + 8a + (-2 * 5 + a * 5) = 0
20 + 8a + (-10 + 5a) = 0

Reorder the terms:
20 + -10 + 8a + 5a = 0

Combine like terms: 20 + -10 = 10
10 + 8a + 5a = 0

Combine like terms: 8a + 5a = 13a
10 + 13a = 0

Solving
10 + 13a = 0

Solving for variable 'a'.

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

Add '-10' to each side of the equation.
10 + -10 + 13a = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 13a = 0 + -10
13a = 0 + -10

Combine like terms: 0 + -10 = -10
13a = -10

Divide each side by '13'.
a = -0.7692307692

Simplifying
a = -0.7692307692

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