Question

x-(2x/3-2)-{0.4[x-(2x/3-2)] 3}=6 解方程,

Answer 1

x-(2x/3-2)-{0.4[x-(2x/3-2)]+3}=6

(x-2x/3+2)-0.4(x-2x/3-2)-3=6

(1-0.4)(x-2x/3-2)=6+3

0.6(x/3-2)=9

x/3-2=9÷0.6=15

x/3=15+2=17

x/3=17÷1/3

x=51