Решить уравнения. 1.) 7x+3=30-2x 2.) 3(x-2)=x+2 3.) 5-2*(x-1)=4-x 4.) 0.2x+2.7=1.4-1.1x 5.) 0.2(7-2y)=2.3-0.3(y-6)

1)7x+3=30-2x
7x+2x=30-3
9x=27
x=3
2.) 3(x-2)=x+2
3x-6=x+2
3x-x=2+6
2x=8
x=4
3.) 5-2*(x-1)=4-x
5-2x+2=4-x
-2x+x=4-5-2
-x=-3
x=3
4.) 0.2x+2.7=1.4-1.1x
0.2x-1.1x=-1.4-2.7
-0.9x=-1.3
x=1.4
5.) 0.2(7-2y)=2.3-0.3(y-6)
1.4-0.4y=2.3-0.3y+1.8
-0.4y+0.3y=2.3+1.8-1.4
-0.1y=2.7
y=-27