7a-4=-2a-40

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Solution for 7a-4=-2a-40 equation: 


a in (-oo:+oo)

7*a-4 = -2*a-40 // + -2*a-40

7*a-(-2*a)-4+40 = 0

7*a+2*a-4+40 = 0

9*a+36 = 0 // - 36

9*a = -36 // : 9

a = -36/9

a = -4

a = -4

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