3a-5(2a+4)=12

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Solution for 3a-5(2a+4)=12 equation:


Simplifying
3a + -5(2a + 4) = 12

Reorder the terms:
3a + -5(4 + 2a) = 12
3a + (4 * -5 + 2a * -5) = 12
3a + (-20 + -10a) = 12

Reorder the terms:
-20 + 3a + -10a = 12

Combine like terms: 3a + -10a = -7a
-20 + -7a = 12

Solving
-20 + -7a = 12

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + -7a = 12 + 20

Combine like terms: -20 + 20 = 0
0 + -7a = 12 + 20
-7a = 12 + 20

Combine like terms: 12 + 20 = 32
-7a = 32

Divide each side by '-7'.
a = -4.571428571

Simplifying
a = -4.571428571

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