Question

Va rog aratatimi cum se rezolva 84×x+9×{1+2 ×[3+4×(5+6×7+4)]}=10×(8×x+22)+207 ?

Answer 1

84*x=9*{1+2*[3+4*(9+42)]}=80*x+220=207
84*x+9*{1=2*[3+4*51]]=80*x=427
84*x+9*{1+2*[3+204]}=80*x+427
84*x+9*{1+2*207}=80*x+427
84*x+9*{1+414}=80*x+427
84*x+9*415=80*x+427
84*x+3735=80*x+427
84*x-80*x=427-3735
4*x=-3308
x=-827