М+(п-к)=м+п-к
с-(-а-в)=с+а+в
(-2)(х+у-8)=-2х-2у+16
(-3)(-х+у+12)=3х-3у-36
3,3(х-6.7)=100
3.3х-22,11=100
3.3х=122,11
х=122.11:3.3
х=37.00303
4-5\7-(м-1)=11/14
4-5\7-м+1=11\14
-м=11\14-4+5\7-1
-м=11/14-4*!4/14+5*2\14-14/14
-м=-41/14
м=2 13/14
-1.3+(х-4.8)=-7.1
-1.3+х-4.8=-7.1
х=-7.1+1.3+4.8
х=-1
1 5\6-(у+2\3)=1 1\2
-у=3\2-11/6+2\3=3*3/6-11\6+2*2\6
-у=2
у=-2