-4=7a-2a+1

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Solution for -4=7a-2a+1 equation: 


a in (-oo:+oo)

-4 = 7*a-(2*a)+1 // - 7*a-(2*a)+1

2*a-(7*a)-4-1 = 0

2*a-7*a-4-1 = 0

-5*a-5 = 0 // + 5

-5*a = 5 // : -5

a = 5/(-5)

a = -1

a = -1

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