(z-7)/5=4.2

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Solution for (z-7)/5=4.2 equation: 


z in (-oo:+oo)

(z-7)/5 = 4.2 // - 4.2

(z-7)/5-4.2 = 0

(z-7)/5+(-4.2*5)/5 = 0

z-4.2*5-7 = 0

z-28 = 0

(z-28)/5 = 0

(z-28)/5 = 0 // * 5

z-28 = 0

z-28 = 0 // + 28

z = 28

z = 28

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