А). 1/5+1=1 1/5
б). 7/16-0,4=7/15-4/10=14-12/30=2/30=1/15
в). 0,75+1/4=75/100+1/4=75+25/100=100/100=1
г). 0,85-5/16=85/100-5/16=17/20-5/16=68-25/80=43/80
д). 1/2-0,5=1/2-5/10=1/2-1/2=0
е). 3/4-0,125=3/4-125/1000=3/4-1/4=2/4=1/2
ж). 7/36+0,25=7/36+25/100=7/36+1/4=7+9/36=16/36=4/9
з). 1/100+0,07=1/100+7/100=1+7/100=8/100=2/25.