-15+7a=9(5a+4)

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Solution for -15+7a=9(5a+4) equation:


Simplifying
-15 + 7a = 9(5a + 4)

Reorder the terms:
-15 + 7a = 9(4 + 5a)
-15 + 7a = (4 * 9 + 5a * 9)
-15 + 7a = (36 + 45a)

Solving
-15 + 7a = 36 + 45a

Solving for variable 'a'.

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

Add '-45a' to each side of the equation.
-15 + 7a + -45a = 36 + 45a + -45a

Combine like terms: 7a + -45a = -38a
-15 + -38a = 36 + 45a + -45a

Combine like terms: 45a + -45a = 0
-15 + -38a = 36 + 0
-15 + -38a = 36

Add '15' to each side of the equation.
-15 + 15 + -38a = 36 + 15

Combine like terms: -15 + 15 = 0
0 + -38a = 36 + 15
-38a = 36 + 15

Combine like terms: 36 + 15 = 51
-38a = 51

Divide each side by '-38'.
a = -1.342105263

Simplifying
a = -1.342105263

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