1)8y+7у=1000:8×3
8y+7у=375
15у=375
у=375/15
у=25
2)35+16+α=200-48
α = – 48 + 200 – 16 – 35
α = 101
3)b-(21+2×16)=308:4
b-(21+2×16)=77
b-53=77
b=77+53
b=130
1)8y+7у=1000:8×3
8y+7у=375
15у=375
у=375/15
у=25
2)35+16+α=200-48
α = – 48 + 200 – 16 – 35
α = 101
3)b-(21+2×16)=308:4
b-(21+2×16)=77
b-53=77
b=77+53
b=130