x*7 - x + 66 : 6 = 192 + 17
=> x(7 - 1) + 11 = 209
=> 6x = 209 - 11
=> 6x = 198
=> x = 33
vậy_
b1.X x 7 - X+66:6=192+17
=>X x(7-1)+11=209
Xx6+11=209
Xx6=209-11=198
x=198:6=33
vậy x=33
\(x\cdot7-x+66\text{ : }6=192+17\)
\(x\cdot\left(7-1\right)+66\text{ : }6=209\)
\(x\cdot6+11=209\)
\(x\cdot6=209-11\)
\(x\cdot6=198\)
\(x=198\text{ : }6\)
\(x=33\)
\(\text{✔️✨✨✔️✨✨}\)