64448215
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6x-10,2=4x-2,2
6x-4x=-2,2+10,2
2x=8
x=8:2
x=4
б) (15-3x-3)=5-4x
-12-3x=5-4x
-3x+4x=5-12
x=5-12
x=-7
в)2(x-0,5)+1=9
2x-1+1=9
2x=9
x=9:2
x=4,5
<span>5,08×2,2-5,07×2,2
1) 5,08*2,2=11,176
2) 5,07*2,2=11,154
3) 11,176-11,154=0,022
Ответ: 0,022</span>
3х+1,6/2,4=5/1,2
зх+4/6=50/12
3х+8=50
3х=42
х=14