7a-2(a-1)=17

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Solution for 7a-2(a-1)=17 equation:


Simplifying
7a + -2(a + -1) = 17

Reorder the terms:
7a + -2(-1 + a) = 17
7a + (-1 * -2 + a * -2) = 17
7a + (2 + -2a) = 17

Reorder the terms:
2 + 7a + -2a = 17

Combine like terms: 7a + -2a = 5a
2 + 5a = 17

Solving
2 + 5a = 17

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 5a = 17 + -2

Combine like terms: 2 + -2 = 0
0 + 5a = 17 + -2
5a = 17 + -2

Combine like terms: 17 + -2 = 15
5a = 15

Divide each side by '5'.
a = 3

Simplifying
a = 3

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