Question

DU COROANA !!!!!!! Calculati :

800-[(100+100:10)x2]+(200+123:2-0) =
[ 124x7-36x5+(310x2-500)]-798=
700:2:7+824:4:2-515:5+816:8=

Answer 1

1)800-[(100+100:10)x2]+(200+132:2-0)=
=800-[(100+10)x2]+(200+66-0)=
=800-(110x2)+266=
=800-220+266=
=580+266=
=806
2)[124x7-26x5+(310x2-500)]-798=
=[868-130+(620-500)]-798=
=(868-130+120)-798=
=876-798=
=78
3)700:2:7+824:4:2-515:5+816:8=
=50+103-101+102=
=154