(-3a+2)-3(5a+7)=

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Solution for (-3a+2)-3(5a+7)= equation:


Simplifying
(-3a + 2) + -3(5a + 7) = 0

Reorder the terms:
(2 + -3a) + -3(5a + 7) = 0

Remove parenthesis around (2 + -3a)
2 + -3a + -3(5a + 7) = 0

Reorder the terms:
2 + -3a + -3(7 + 5a) = 0
2 + -3a + (7 * -3 + 5a * -3) = 0
2 + -3a + (-21 + -15a) = 0

Reorder the terms:
2 + -21 + -3a + -15a = 0

Combine like terms: 2 + -21 = -19
-19 + -3a + -15a = 0

Combine like terms: -3a + -15a = -18a
-19 + -18a = 0

Solving
-19 + -18a = 0

Solving for variable 'a'.

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

Add '19' to each side of the equation.
-19 + 19 + -18a = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -18a = 0 + 19
-18a = 0 + 19

Combine like terms: 0 + 19 = 19
-18a = 19

Divide each side by '-18'.
a = -1.055555556

Simplifying
a = -1.055555556

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