Question

Determine o valor das explessoes numéricas a 10×(30÷(2×3+4)+15)b 25+(14_(25×4+40_(20÷2+10.) C (16÷8+(4÷2+2×1).2)_5 d (10+6×4+(15÷3+21÷7).21_5×10

Answer 1

Resposta:

A) 180.

B) - 81.

C) 1.

D) - 1.218

Explicação passo-a-passo:

a) 10 × ( 30 ÷ ( 2 × 3 + 4 ) + 15 )

2 × 3 =  6 + 4 = 10

30 ÷ 10 = 3 + 15 = 18

18 × 10 = 180

B) 25 + ( 14 - ( 25 × 4 + 40 ) - ( 20 ÷ 2 + 10 ))

25 × 4 = 100 + 40 = 140

20 ÷ 2 = 10 + 10 = 20

140 - 20 = 120

14 - 120 = - 106

25 + ( - 106 ) = - 81

C) ( 16 ÷ 8 + ( 4 ÷ 2 + 2 × 1 ) × 2 ) - 5

4 ÷ 2 = 2

2 × 1 = 2

2 + 2 = 4

16 ÷ 8 = 2

2 + 4 = 6

6 - 5 = 1

D) ( 10 + 6 × 4 + 15 ÷ 3 + 21 ÷ 7 ) × 21 - 5 × 10

6 × 4 = 24

15 ÷ 3 = 5

21 ÷ 7 = 3

10 + 24 + 5 + 3 = 42

42 × 21 ( - 5 × 10 )

42 × 21 - 50

42 × - 29 = - 1.218