28 + (45 + х) = 100
(у - 25) + 18 = 40
(70 - х) - 35 = 12
60 -(y + 34) = 5
52 - (19 + х) = 17
х : 12 + 48 = 91
20y - 14у + 7у - 13 = 13
84 - 7у = 28
54х - 27х = 8
90 - y * 12 = 78 рещите плиз

1)28+(45+х)=100, х=100-28+45=272)(у-25)+18=40, х=40-18+25=473)(70-х)-35=12, х=70-35-12=234)60-(у+34)=5, у=60-34-5=215)52-(19+х)=17, х=52-17-19=166)х:12+48=91, х:12=91-48 х=43*12=5167)20у-14у+7у-13=13, 13у-13=13, у=(13+13):13, у=28)84-7у=28, 7у=84-28, у=56:7=89)54х-27х=8, 27х=810)90-у*12=78, 12у=90-78=12, у=12:12=1