Question

2x+3=x-1 8x-2=7x-2 10y+7=12y-5-3y 2.4x-9.8=1.4x-9 0.48x-6= -0.02x 2x；3=6；5 8；3=4x；7

只要在今天耳朵7点半前完成，我加100 快要准确

Answer 1

2x+3=x-1
2x-x=-1-3
x=-4

8x-2=7x-2
8x-7x=-2+2
x=0

10y+7=12y-5-3y
10y+7=9y-5
10y-9y=-5-7
y=-12

2.4x-9.8=1.4x-9
2.4x-1.4x=9.8-9
x=0.8

0.48x-6= -0.02x
0.48x+0.02x=6
0.5x=6
x=12

2x:3=6:5
2x*5=3*6
10x=18
x=1.8

8:3=4x:7
4x*3=7*8
12x=56
3x=14
x=14/3