Question

1) (1.8+x)*21=71.4
2) 16(4x_3.4)=6.08
3) (x-1.25)*4.5=27
4)(x+19.64)*0.18=144
5)17(1.6-5x)=2.38
6) 9.66:(x+0.17)=23
7)5.6:(x-6)=8
8)5.6:x-6=8
9)34.12-x:3.08=34.03
10)x:100-1.2367=2.9633
11)9.2(0.01y+0.412)=4.6
12)8.8(0.12y-0.04)=0.44

Answer 1

1)1,8+х=71,4:21
х=3,4-1,8
х=1,6
2)4х-3,4=6,08:16
4х=3,78
х=0,945
3)х-1,25=6
х=7,25
4)х+19,64=800
х=780,36
5)1,6-5х=2,38:17
-5х=1,46
х=-0,292
6)х+0,17=9,66:23
х=0,42-0,17
х=0,25
7)х-6=5,6:8
х=6,7
8)5,6:х=8+6
х=5,6:14
х=0,4
9)-х:3,08=34,12-34,03
-х:3,08=0,09
х=-0,2772
10)х:100=2,9633+1,2367
х=420
11)0,01у+0,412=4,6:9,2
0,01у=0,088
у=8,8
12)0,12у-0,04=0,44:8,8
0,12у=0,09
у=0,75