18=7+3(a-8)

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Solution for 18=7+3(a-8) equation:


Simplifying
18 = 7 + 3(a + -8)

Reorder the terms:
18 = 7 + 3(-8 + a)
18 = 7 + (-8 * 3 + a * 3)
18 = 7 + (-24 + 3a)

Combine like terms: 7 + -24 = -17
18 = -17 + 3a

Solving
18 = -17 + 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 + -3a = -17 + 3a + -3a

Combine like terms: 3a + -3a = 0
18 + -3a = -17 + 0
18 + -3a = -17

Add '-18' to each side of the equation.
18 + -18 + -3a = -17 + -18

Combine like terms: 18 + -18 = 0
0 + -3a = -17 + -18
-3a = -17 + -18

Combine like terms: -17 + -18 = -35
-3a = -35

Divide each side by '-3'.
a = 11.66666667

Simplifying
a = 11.66666667

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