1) (х-30):2=380
x-30=760
x= 790
2.)3,7+5y =7y+13
7y-5y=3.7-13
2y= -9.3
y=-4.65
х=(380*2)+30 х=790 (790-30)/2=380
1) (х-30):2=380
x-30=760
x= 790
2.)3,7+5y =7y+13
7y-5y=3.7-13
2y= -9.3
y=-4.65
х=(380*2)+30 х=790 (790-30)/2=380