7(-1a+9)=28

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Solution for 7(-1a+9)=28 equation: 


a in (-oo:+oo)

7*(9-1*a) = 28 // - 28

7*(9-1*a)-28 = 0

7*(9-a)-28 = 0

7*(9-a)-28 = 0

35-7*a = 0

35-7*a = 0

35-7*a = 0 // - 35

-7*a = -35 // : -7

a = -35/(-7)

a = 5

a = 5

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