(1)147÷5x=9.8 5x=147÷9.8 5x=15 x=3 |
(2)160×25%-1.3x=17.9 40-1.3x=17.9 1.3x=22.1 x=17 |
(3)x+x=3.3 x=3.3 x=3.6 |
(4)0.8×(x-0.2)=1 0.8x-0.16=1 0.8x=1.16 x=1.45 |
(5)2%x×15+=11 30%x+=11 x=35 |
(6)-=0.4 =0.4 x=12 |
(7)10:x=9: 9x=16 x= |
(8)1:1=x: x=1 x= |
(9)3(x+2)=4(x+1) 3x+6=4x+1 x=5 |
(10)= 0.6x-0.3=0.5x+0.5 x=8 |