7a-2-(a+7)=

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Solution for 7a-2-(a+7)= equation:


Simplifying
7a + -2 + -1(a + 7) = 0

Reorder the terms:
7a + -2 + -1(7 + a) = 0
7a + -2 + (7 * -1 + a * -1) = 0
7a + -2 + (-7 + -1a) = 0

Reorder the terms:
-2 + -7 + 7a + -1a = 0

Combine like terms: -2 + -7 = -9
-9 + 7a + -1a = 0

Combine like terms: 7a + -1a = 6a
-9 + 6a = 0

Solving
-9 + 6a = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 6a = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 6a = 0 + 9
6a = 0 + 9

Combine like terms: 0 + 9 = 9
6a = 9

Divide each side by '6'.
a = 1.5

Simplifying
a = 1.5

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