Răspuns :

Nistor07id

Răspuns:

Salutare!

[(320-8x):4+15]•32-9=1751

[(320-8x):4+15]•32=1751+9

[(320-8x):4+15]=1760:32

(320-8x):4+15=55

(320-8x):4=55-15

320-8x=40•4

320-8x=160

8x=160

==> x=20

Iakabcristina2id

Răspuns:

[(320 - 8x) : 4 + 15] × 32 = 1751 + 9

[(320 - 8x) : 4 + 15] × 32 = 1760

[(320 - 8x) : 4 + 15] = 1760 : 32

(320 - 8x) : 4 + 15 = 55

(320 - 8x) : 4 = 55 - 15

(320 - 8x) : 4 = 40

320 - 8x = 40 × 4

320 - 8x = 160

8x = 320 - 160

8x = 160

x = 20

ID Alte intrebari