128, 32x+2x-7x-7=27x-7=27*5-7=135-7=128
Х=0.6+0.54
х=1,14
1,14-0,54=0,6
0,6=0,7
<span>2 4/5-1 2/3=14/5-5/3=42/15-25/15=17/15=1 2/15</span><span> 7 1/6+2 1/4=43/6+9/4=86/12+27/12=113/12=9 5/12</span><span>, 11/15-2/5=11/15-6/15=5/15=1/3</span><span>3/4+3/14=21/28+6/28=27/28</span>
130,5 -130 1\2, 70,36-70 9\25