Question

Помогите решить даю 20 баллов

Answer 1

Объяснение:

1)81,5у-63цел4/7z-99.4y+64цел2/3z=(81.5y-99.4y)+(64цел2/3z-63цел4/7)=-18.1y+1цел2/21z=-181-2=-183

2)-177.5/11t+100.1k+176.4/9t=(-177.45/99+176.44/99)t+100.1k=-1.1/99t+100.1k=20+5055=5075

3)33.6n-76.3/8m+78 1/9m-35n=-2,4n+1.53/72m=15-24=-9

4)29.4/13s+409.1/9t-30.5s-407.2t=-1.1/13s+1.41/45t=14/5+2/5=16/5=3.1/5=3.2