Bai 1 a)2x-1=3x+5 b)2(x-3)+1=3(1-x)+2 HELP ME 08/07/2021 Bởi Iris Bai 1 a)2x-1=3x+5 b)2(x-3)+1=3(1-x)+2 HELP ME
a. 2x-1=3x+5 ⇔2x-3x=5+1 ⇔-x=6 ⇔x=-6 b. 2(x-3)+1=3(1-x)+2 ⇔2x-6+1=3-3x+2 ⇔2x+3x=2+3+6-1 ⇔5x=10 ⇔x=2 Bình luận
a)2x-1=3x+5 ⇔ 2x -3x = 5 +1 ⇔ -x = 6 ⇔ x = -6 Vậy x= -6 b)2(x-3)+1=3(1-x)+2 ⇔ 2x -6 +1 = 3 -3x +2 ⇔ 2x – 5 = 5 -3x ⇔ 2x +3x = 5 +5 ⇔ 5x = 10 ⇔ x = 2 Vậy x= 2 Bình luận
a. 2x-1=3x+5
⇔2x-3x=5+1
⇔-x=6
⇔x=-6
b. 2(x-3)+1=3(1-x)+2
⇔2x-6+1=3-3x+2
⇔2x+3x=2+3+6-1
⇔5x=10
⇔x=2
a)2x-1=3x+5
⇔ 2x -3x = 5 +1
⇔ -x = 6
⇔ x = -6
Vậy x= -6
b)2(x-3)+1=3(1-x)+2
⇔ 2x -6 +1 = 3 -3x +2
⇔ 2x – 5 = 5 -3x
⇔ 2x +3x = 5 +5
⇔ 5x = 10
⇔ x = 2
Vậy x= 2