Question

what number should be subtracted from - 20 so as to get 40​

Answer 1

Answer:

60

20+40=60

60-20=40

here proved

Answer 2

Answer:

Step-by-step explanation:x*5/2+2/3=-7/12,

5x/2+2/3=-7/2,

denominators L.C.M=6

5x/2*6+2/3*6 total /6,

15x+4= -7/2,

30x+8=-7,

30x=-15,

x=-15/30,

x=-1/2.

hence the rational number should be =-1/2