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

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


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

Reorder the terms:
-7 + 5(5 + 3a) = -3a
-7 + (5 * 5 + 3a * 5) = -3a
-7 + (25 + 15a) = -3a

Combine like terms: -7 + 25 = 18
18 + 15a = -3a

Solving
18 + 15a = -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
18 + 15a + 3a = -3a + 3a

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

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

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

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

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

Divide each side by '18'.
a = -1

Simplifying
a = -1

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