2z-15(1-2z)=72
2z – 15 + 30z = 72
2z + 30z = 72 + 15
32z = 87
z = 2.71875
8c-(3-7c)=9c+2
8c – 3 + 7c = 9c + 2
8c + 7c – 9c = 2 + 3
6c = 5
c = 5/6
с=0,83333333333
1-8(3-2y)=2(1-y)
1 – 24 + 16y = 2 – 2y
16y + 2y = 2 + 24 – 1
18y = 25
y = 25/18
у=1,38888888889
2z-15(1-2z)=72
2z – 15 + 30z = 72
2z + 30z = 72 + 15
32z = 87
z = 2.71875
8c-(3-7c)=9c+2
8c – 3 + 7c = 9c + 2
8c + 7c – 9c = 2 + 3
6c = 5
c = 5/6
с=0,83333333333
1-8(3-2y)=2(1-y)
1 – 24 + 16y = 2 – 2y
16y + 2y = 2 + 24 – 1
18y = 25
y = 25/18
у=1,38888888889