4(7a-9)=20

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Solution for 4(7a-9)=20 equation: 


a in (-oo:+oo)

4*(7*a-9) = 20 // - 20

4*(7*a-9)-20 = 0

4*(7*a-9)-20 = 0

28*a-56 = 0

28*a-56 = 0

28*a-56 = 0 // + 56

28*a = 56 // : 28

a = 56/28

a = 2

a = 2

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