7(a+9)=3(a-4-a)

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Solution for 7(a+9)=3(a-4-a) equation:


Simplifying
7(a + 9) = 3(a + -4 + -1a)

Reorder the terms:
7(9 + a) = 3(a + -4 + -1a)
(9 * 7 + a * 7) = 3(a + -4 + -1a)
(63 + 7a) = 3(a + -4 + -1a)

Reorder the terms:
63 + 7a = 3(-4 + a + -1a)

Combine like terms: a + -1a = 0
63 + 7a = 3(-4 + 0)
63 + 7a = 3(-4)

Multiply 3 * -4
63 + 7a = -12

Solving
63 + 7a = -12

Solving for variable 'a'.

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

Add '-63' to each side of the equation.
63 + -63 + 7a = -12 + -63

Combine like terms: 63 + -63 = 0
0 + 7a = -12 + -63
7a = -12 + -63

Combine like terms: -12 + -63 = -75
7a = -75

Divide each side by '7'.
a = -10.71428571

Simplifying
a = -10.71428571

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