3,6+5y=7(1,2-y)=

0,4(6-4t)=0,5(7-3t)-1,9=

да пожалуйста!

3,6+5у=7(1,2-у)3,6+5у=8,4-7у12у=4,8у=0,40,4(6-4t)=0.5(7-3t)-1.92.4-1.6t=3.5-1.5t-1.9-0.1t=3.5-1.9-2.4-0.1t=-0.8t=8

3,6+5y=7(1,2-y)3,6+5y=8,4-7y-2y=8,4-3,6-2y=4,8y=-2,40,4(6-4t)=0,5(7-3t)-1,92,4-1,6t=3,5-1,5t-1,9-0,1t=3,5-1,9-2,4-0,1t=-0,8t=8