4/5(x+5)+3/5x=7

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Solution for 4/5(x+5)+3/5x=7 equation:


x in (-oo:+oo)

(4/5)*(x+5)+(3/5)*x = 7 // - 7

(4/5)*(x+5)+(3/5)*x-7 = 0

4/5*(x+5)+(3*x)/5-7 = 0

(4/5*5*(x+5))/5+(3*x)/5+(-7*5)/5 = 0

4/5*5*(x+5)+3*x-7*5 = 0

7*x-35+20 = 0

7*x-15 = 0

(7*x-15)/5 = 0

(7*x-15)/5 = 0 // * 5

7*x-15 = 0

7*x-15 = 0 // + 15

7*x = 15 // : 7

x = 15/7

x = 15/7

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