a) x - 1845 = 115 x 2 - 25 x 3
x - 1845 = 230 - 75
x - 1845 = 155
x = 155 + 1845
\(b,230+35x4=x+\frac{700}{5}+30\)
230 + 140 = x + 140 + 30
370 = x + 170
x = 370 - 170
x = 200
a) x - 1845 = 115 x 2 - 25 x 3
x - 1845 = 230 - 75
x - 1845 = 155
x = 155 + 1845
x = 2000
Vậy x = 2000
b) 230 + 35 x 4 = x + 700 / 5+30
370 = x + 140 + 30
370 = x + 170
x = 370 - 170
x = 200
Vậy x = 200
a) x - 1845 = 115 x 2 - 25 x 3
=> x = 230 - 75 + 1845
=> x = 155 + 1845
=> x = 2000
b) 230 + 35 x 4=x + 700/5 + 30
=> 230 + 140 = x + 700/5 + 30
=> x + 700/5 + 30 = 370
=> x + 700/5 = 340
=> x + 140 = 340
=> x = 340 - 140
=> x = 200
chúc bạn học tốt !
a, x-1845=115x2-25x3
x-1845=130-75
x-1845=55
x=55+1845
x=1900
