Question

Resolva as equações:
a) 7+ 25 −47 +26 −(− 5)5
b) (2)(6)
c) (x + 5)(x - 6) - 51 - x

Answer 1

Resposta:

A) 7 + 25 - 47 + 26 - (-5) 5

7+25-(- 47 ) +26 -(- 5)5

32 -(-47) +26- (-5)5

3

5 = 32+47+26+5

5 = 110

110 ÷ 5 = 22

B) (2) (6)

2 × 6 = 12

C) (×+5) (×-6) -51- ×

2×( 6×) (51×) 2×

5× = 6 -51

5× = 45

× = 45 ÷ 5

× = 9