229 2x*6=5*36 4*54=9*3x 7*54=21*3x 11*3x=2*33 8*15=5*4x 9*64=3x*16
2x=5*6 3x=6*4 3x*3=54 3x=2*3 4x=8*3 3x=9*4
x=5*3=15 x=4*2=8 x=(54/3)/3=6 x=2 x=3*2=6 x=3*4=12
230) (8x+5.2)*2=11*2.4
16x+10.4=11*2.4
16x=26.4-10.4
16x=16
x=1
4*10,4=(7x-2)*1.6
41.6=11.2x-3.2
11.2x=41.6+3.2
11.2x=44.8
x=4
(x-0.2)*1.2=4.2*0.8
1.2x-0.24=3.36
1.2x=3.36+0.24
1.2x=3.6
x=3
(3x+0.8)*3.6=4.8*9.6
10.8x+2.88=46.08
10.8x=46.08-2.88
10.8x=43.2
x=4
(5x+3)*13.5=27*9
67.5x+40.5=243
67.5x=243-40.5
67.5x=202.5
x=3
8*(9x+7)=20*28
72x+56=560
72x=560-56
72x=504
x=7