300-(90+70)+(86-46)= ,90:(10*9):(9:9)=,0*8+7=,0*(8+7)=,91:13*7=,84:(14*3)=.

Question

300-(90+70)+(86-46)= ,90:(10*9):(9:9)=,0*8+7=,0*(8+7)=,91:13*7=,84:(14*3)=.

Answer 1

300-160+40=80. 90:90:1=1, 0+7=7, 0, 7*7=49,84:42=2.