a, 11.(x - 6) = 4.x + 11
11x - 66 = 4x + 11
11x - 4x = 66 + 11
7x = 77
x = 11
b, 230 + 35 x 4 = x + 700 : 5 + 30
370 = x + 140 + 30
x + 170 = 370
x = 370 - 170
x = 200
a,11.(x-6)=4.x+11
11x-66=4x+11
11x-4x=11+66
7x=77
x=11
b, 230 + 35 x 4 = x + 700/5 + 30
230 + 140 = x + 140 + 30
370 = x + 170
370 - 170 = x
200 = x
Vậy x = 200
230+35.4=x+700:5+30
370=x+700:5+30
x+700:5+30=370
x+140=340
x=200
\(a,11.\left(x-6\right)=4.x+11\)
\(11x-66=4x+11\)
\(11x-4x=66+11\)
\(7x=77\)
\(x=11\)