2x + 7 = 17
2x = 10
x = 5
19 - 3x = 10
3x = 9
x = 3
5x + 23 = 48
5x = 25
x = 5
2.(x-4) = 26
x - 4 = 13
x = 17
x=5
x=3
x=5
x=6
x=44/3
k mk nha. ~HỌC TỐT~
4.(2x -6) = 24
2x - 6 = 6
2x = 12
x = 6
3.(x+5-13) = 20
x - 8 = 20/3
x = 44/3
2x+7=17 19-3x = 10 5x+23=48 2(x-4)=26 4(2x-6)=24 3(x+5-13)=20
2x=17-7 -3x = 10-19 5x = 48 - 23 2x-8 = 26 8x-24 = 24 3(x-8) = 20
2x = 10 -3x = -9 5x = 25 2x = 26+8 8x = 24+24 3x-24 = 20
x=5 x = 3 x = 5 x = (26+8) : 2 8x = 48 3x = 44
x = 17 x=6 x = 44/3