решите уравнения x*50+100=700; 100-27:x=97; 7*x-19=9; 57+x:7=69; 89-9*x=17; 480:k-6=0; k*2+47=73; 42-95:k=37; 27+4*k=99; k:5+30=46
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x=12
-27/x=-3
x=9
7x=28
x=4
57+x =483
x=426
-9x=-72
x=8
2k=26
k=13
42k-95=37k
5k=95
k=19
4k=72
k=18
k+150=230
k=80