A) 4y+7=5y+4 35-11m=3m+21 10-9y=10-6y 10-9y=70-6y -9x-56=5x
4y-5y=4-7 -11m-3m=21-35 -9y+6y=10-10 -9y+6y=70-10 -9x-5x=56
-y=-3 -14m=-14 -3y=0 -3y=60 -14x=56
y=3 m= 1 y=0 y= -20 x= -4
Б) 56-9n=-5n 15-8x=2-9x 10z+7=9z+5 10z+7=9z+5 17-8y=4y-7
-9n+5n=-56 -8x+9x=2-15 10z-9z=5-7 10z-9z=5-7 -8y-4y=-7-17
-4n=-56 x= -13 z= -2 z= -2 -12y=-24
n=14 y=2
В) 10-11n=15-12n -9z+32=7z 25-12m=45-8m 25-12m=45-8m 5y+15=4y+20
-11n+12n=15-10 -9z-7z=-32 -12m+8m=45-25 -12m+8m=45-25 5y-4y=20-15
n=5 -16z=-32 -4m=20 -4m=20 y=5
z=2 m= -5 m= -5
Г) -7x-40=3x 10n-9=7n+12 14=2y-2
-7x-3x=40 10n-7n= 12+9 -2y=-2-14
-10x=40 3n=21 -2y=-16
x= -4 n=7 y=8
Д) 15+4y=y 24-15m=15-14m 6x+5=7x+3
4y-y=-15 -15m+14m=15-24 6x-7x=3-5
3y= -15 -m= -9 -x= -2
y= -5 m=9 x =2
Е) 17-12n=3n-13 8y-15=7y-12 11m-13=15-3m
-12n-3n= -13-17 8y-7y= -12+15 11m+3m=15+13
-15n= -30 y=3 14m=28
n=6 m=2