1/2(1+x)=7

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Solution for 1/2(1+x)=7 equation: 


x in (-oo:+oo)

(1/2)*(x+1) = 7 // - 7

(1/2)*(x+1)-7 = 0

1/2*(x+1)-7 = 0

1/2*(x+1)-7 = 0

1/2*x-13/2 = 0

1/2*x-13/2 = 0

1/2*x-13/2 = 0 // + 13/2

1/2*x = 13/2 // : 1/2

x = 13/2/1/2

x = 13

x = 13

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