Question

pls acum dau coroana pls :((((((((((((((((((((((( aflati nr. necunoscute
1. x*4/10+101=133
2. 869-[(x+112)/5+113]=134
3. 104/[(x-3*8)*2/8]=13

Answer 1

Răspuns:

Explicație pas cu pas:

1.

x × 4 : 10 + 101 = 133

x × 4 : 10 = 133 - 101

x × 4 : 10 = 32

x × 4 = 32 × 10

x = 320 : 4

x = 80

_____________________

2.

869 - [( x + 112) : 5+113] = 134

( x + 112) : 5+113 = 869 - 134

( x + 112) : 5+113 = 735

( x + 112) : 5 = 735 - 113

( x + 112) : 5 = 622

x + 112 = 622 × 5

x + 112 = 3110

x = 3 110 - 112

x = 2 998

_____________________

3.

104 : [(x - 3 × 8) × 2 : 8]=13

(x - 3 × 8) × 2 : 8 = 104 : 13

(x - 3 × 8) × 2 : 8 = 8

(x - 24) × 2 = 8 × 8

(x - 24) × 2 = 64

x - 24 = 64 : 2

x - 24 = 32

x = 32 + 24

x = 56