15+3(3a-1)=16-(2u-7)

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Solution for 15+3(3a-1)=16-(2u-7) equation:


Simplifying
15 + 3(3a + -1) = 16 + -1(2u + -7)

Reorder the terms:
15 + 3(-1 + 3a) = 16 + -1(2u + -7)
15 + (-1 * 3 + 3a * 3) = 16 + -1(2u + -7)
15 + (-3 + 9a) = 16 + -1(2u + -7)

Combine like terms: 15 + -3 = 12
12 + 9a = 16 + -1(2u + -7)

Reorder the terms:
12 + 9a = 16 + -1(-7 + 2u)
12 + 9a = 16 + (-7 * -1 + 2u * -1)
12 + 9a = 16 + (7 + -2u)

Combine like terms: 16 + 7 = 23
12 + 9a = 23 + -2u

Solving
12 + 9a = 23 + -2u

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 9a = 23 + -12 + -2u

Combine like terms: 12 + -12 = 0
0 + 9a = 23 + -12 + -2u
9a = 23 + -12 + -2u

Combine like terms: 23 + -12 = 11
9a = 11 + -2u

Divide each side by '9'.
a = 1.222222222 + -0.2222222222u

Simplifying
a = 1.222222222 + -0.2222222222u

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