Решите плз 0.4*(6x-7)=0.5*(3x+7) 7*(1.4y+1.8)-27.6=10.1y

0.4*(6x-7)=0.5*(3x+7)
2.4х - 2.8 = 1.5х + 3.5
2.4х - 1.5х = 3.5 + 2.8
0.9 = 6.3
х = 7


7*(1.4y+1.8)-27.6=10.1y
9.8у + 12.6 - 27.6 = 10.1у
9.8у - 10.1у = 27.6 - 12.6
-0.3у = 15
у = 50

1)2.4х-2.8=1.5х+3.5
2.4х-1.5х=3.5+2.8
0,9х=6,3
х=7
2)(9,8у+12,6)))-27,6=10,1у
9,8у-15=10,1у
-0,3у=15
у=-50