Question

a) [16+4×2) :8+4×3]:3 =

b) 15+ [10- (24:3+2) +5] =

c) 20- [12- (3+4) + 1] =

d) 20- [12-3×4) +1 =

e) 100- [25+ (5×2-1) +3] =

f) 45+ [( 8×5-10:2) + (18:6-2)] =


me ajudem prfvr é para agr,urgente!!!



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Answer 1

a) [ (16 + 8) : 8 + 12 ] : 3=

[ 24 : 8 +12] : 3=

[ 3 +12] : 3=

15 :3=

5

b) 15 + [ 10 - ( 8 +2)+5]=

15 + [ 10 - 10 +5]=

15 + 5=

20

c) 20 - [ 12 - 7 +1]=

20 - [ 5+1]=

20 - 6=

14

d) 20 - [ 12 - 12 +1]=

20 - [ +1]=

20 - 1 =

19

e) 100 - [ 25 + (10-1) +3]=

100 - [ 25 + 9 +3]=

100 - [ +37]=

100 - 37=

+63

f) 45 + [ (40 -5) + ( 3-2)]=

45 + [ 35 + 1]=

45 + 36=

81