a+(a-2)+5(a-2)=30

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Solution for a+(a-2)+5(a-2)=30 equation:


Simplifying
a + (a + -2) + 5(a + -2) = 30

Reorder the terms:
a + (-2 + a) + 5(a + -2) = 30

Remove parenthesis around (-2 + a)
a + -2 + a + 5(a + -2) = 30

Reorder the terms:
a + -2 + a + 5(-2 + a) = 30
a + -2 + a + (-2 * 5 + a * 5) = 30
a + -2 + a + (-10 + 5a) = 30

Reorder the terms:
-2 + -10 + a + a + 5a = 30

Combine like terms: -2 + -10 = -12
-12 + a + a + 5a = 30

Combine like terms: a + a = 2a
-12 + 2a + 5a = 30

Combine like terms: 2a + 5a = 7a
-12 + 7a = 30

Solving
-12 + 7a = 30

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 + 7a = 30 + 12

Combine like terms: -12 + 12 = 0
0 + 7a = 30 + 12
7a = 30 + 12

Combine like terms: 30 + 12 = 42
7a = 42

Divide each side by '7'.
a = 6

Simplifying
a = 6

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