решите уравнения
1.3(y-5)-2(y-4)=8
2.-5(5-x)-4x=18
3.3(2x+8)-(5x+2)=0
4.-3(y+4)+4(2y-1)=0
3.8(3-2x)+5(3x+5)=9
1.3(y-5)-2(y-4)=8
2.-5(5-x)-4x=18
3.3(2x+8)-(5x+2)=0
4.-3(y+4)+4(2y-1)=0
3.8(3-2x)+5(3x+5)=9
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Answers & Comments
у-5-2у+8=8
-у=8-8+5
у=-5
2.-5(5-x)-4x=18
-25+5х-4х=18
х=18+25
х=43
3.3(2x+8)-(5x+2)=0
6х+24-5х-2=0
х+22=0
х=-22
4.-3(y+4)+4(2y-1)=0
-3у-12+8у-4=0
5у-16=0
5у=16
у=16/5
у=3,2
3.8(3-2x)+5(3x+5)=9
24-16х+15х+25=9
49-х=9
х=49-9
х=40