-3(10+10a)+5(a+2a)=4a(-2)

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Solution for -3(10+10a)+5(a+2a)=4a(-2) equation:


Simplifying
-3(10 + 10a) + 5(a + 2a) = 4a(-2)
(10 * -3 + 10a * -3) + 5(a + 2a) = 4a(-2)
(-30 + -30a) + 5(a + 2a) = 4a(-2)

Combine like terms: a + 2a = 3a
-30 + -30a + 5(3a) = 4a(-2)

Remove parenthesis around (3a)
-30 + -30a + 5 * 3a = 4a(-2)

Multiply 5 * 3
-30 + -30a + 15a = 4a(-2)

Combine like terms: -30a + 15a = -15a
-30 + -15a = 4a(-2)

Reorder the terms for easier multiplication:
-30 + -15a = 4 * -2a

Multiply 4 * -2
-30 + -15a = -8a

Solving
-30 + -15a = -8a

Solving for variable 'a'.

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

Add '8a' to each side of the equation.
-30 + -15a + 8a = -8a + 8a

Combine like terms: -15a + 8a = -7a
-30 + -7a = -8a + 8a

Combine like terms: -8a + 8a = 0
-30 + -7a = 0

Add '30' to each side of the equation.
-30 + 30 + -7a = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -7a = 0 + 30
-7a = 0 + 30

Combine like terms: 0 + 30 = 30
-7a = 30

Divide each side by '-7'.
a = -4.285714286

Simplifying
a = -4.285714286

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