-2a-1+4a=13 - solution

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Solution for -2a-1+4a=13 equation:

a in (-oo:+oo)

4*a-2*a-1 = 13 // - 13

4*a-2*a-13-1 = 0

2*a-14 = 0 // + 14

2*a = 14 // : 2

a = 14/2

a = 7

a = 7

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