1)
x= -8 1/20 + 7,21
x= -8,05 + 7,21
x = -0,84
2)
m= -3,7 + 1 3/4
m = -3,7 + 1,75
m = -1,95
3)
y = -4 1/3 +2
y = -2 1/3
Б)<span>1.56•1.35-0.85•0.32=2.106-0.85*0.32=2.106-0.272=1.834
</span>
(3,8:9,5+3,9:1,5-1 5/8):0,75=(0,4+2,6-1,875):0,75= 1,125:0,75= 1,5