Question

уравнения.....
3(у-5)-2(у-4)=8
-5(5-х)-4х=18

Answer 1

первое.

3(у-5)-2(у-4)=8

3у - 15 - 2у + 8 = 8

у = 15

второе.

-5(5-х)-4х=18

-25 + 5x - 4x = 18

x = 43

Answer 2

3(у-5)-2(у-4)=8

3у-15-2у+8=8

у=15

 

-5(5-х)-4х=18

-25+5х-4х=18

х=25+18

х=43.