Question

Resolvam Fazer a conta por favor​

Answer 1

5) 50- [ 48÷ (12+4) ]=

50- [ 48÷ 16]=

50- 3

47

6) [( 4+ 8) ×5 - 10] ÷10=

[ 12 ×5 -10 ] ÷10=

[ 60- 10] ÷10=

50÷10=

5

7) {10+ [5× ( 4+ 10) -8]×2 } - 100=

{10+ [5x 14- 8] ×2 } -100=

{10+ [70 -8 ] ×2 } -100=

{10+ 62 ×2 } - 100=

{10+ 124} -100=

134- 100=

34

8) [6× (12- 2×5) -4] +3 × (4-2) - ( 10÷ 2)=

[6× (12 - 10) -4 ] +3 × (4-2) - (10÷2)=

[6× 2- 4] + 3× (4-2) - (10÷2)=

[6× 2- 4] + 3× 2 - (10÷2)=

[6× 2- 4] + 3× 2 - 5=

[12- 4] + 3× 2 - 5=

8+ 3× 2- 5=

8+ 6- 5=

14-5=

9

9) 10+ [4+ (21 + 1)] -3=

10+[4+ 22] -3=

10+ 26 -3=

36 -3=

33

10) { [(8+8×9) ÷(81÷3-7)×(45÷3-10)]÷5}÷2=

{ [(8+72) ÷ (81÷3-7) ×(45÷3-10)]÷5}÷2=

{ [ 80÷ (81÷3-7) ×(45÷3-10)]÷5} ÷2=

{ [ 80÷ (27-7) × (45÷3-10)]÷5} ÷2=

{ [ 80÷ 20 × (15- 10)]÷5} ÷2=

{ [ 80÷ 20 × 5 ]÷5} ÷2=

{ [ 4 × 5 ] ÷5}÷2=

{20 ÷5} ÷2=

4÷ 2=

2