2a-7=-1

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Solution for 2a-7=-1 equation: 


a in (-oo:+oo)

2*a-7 = -1 // + 1

2*a-7+1 = 0

2*a-6 = 0 // + 6

2*a = 6 // : 2

a = 6/2

a = 3

a = 3

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