Question

Resolva as expressoes

a) 7×11+ (42-1) =
b) 72-14×6- (126+4) =
c) 1026-100+42- (17×12) =

Answer 1

$a) \\ 7.11+(42-1)=77+41=36 \\ \\ b) \\ 72-14.6-(126+4)=72-84-130=72-214=-142 \\ \\ c) \\ 1026-100+42-(17.12)=1026-100+42-204=1068-304=764$

Answer 2

A-  7*11+41=> 77+41=118