(2*2-2):2=1 ______
2*(2-2:2)=2_____
(2*2)-2:2=3_____
2*(2-2):2=0
A) x-5=707:7
x-5=101
x=101+5
x=106
б)25x-8x+95=605
17x+95=605
17x=605-95
17x=510
x=510:17
x=30
<span>3-5x/5+3x-5/3+6x+7/15=3x-2/1
(3(3-5х)+5(3х-5)+6х+7)/15=3х-2
</span>(9-15х+15х-25+6х+7)/15-3х=-2
(6х-9)/15-45х/15=-2
(6х-9-45х)/15=-2
-39х-9=-2*15
-39х=-30+9
-39х=-21
х=-21:(-39)
х=21/39