Question

[(150:10+25)+85]:5=?? 2x[(0:90+90:5)+123:3-10)]+999:9x3=?? 600+480:4-[68:2+4x(20+12-18)]=?? 6+10x[362-10x(42+42:6)]x0=??

Answer 1

1. [(150:10+25)+85]:5=
[(15+25)+85]:5=
(40+85):5=
125:5=25

2. 2·[(0:90+90:5+123:3-10)]+999:9·3=
2·[(0+18+41-10)]+111·3=
2·[(18+41-10)]+333=
2·(59-10)+333=
2·49+333=
98+333=431

3. 600+480:4-[68:2+4·(20+12-18)]=
600+120-[34+4·(32-18)]=
600+120-(34+4·14)=
600+120-(34+56)=
600+120-90=
720-90=630

4. 6+10·[362-10·(42+42:6)]·0=
6+10·[362-10·(42+7)]·0=
6+10·(362-10·49)·0=
6+10·(362-490)·0=
6+10·(-128)·0=
6+(-1280)·0=
6+0=6