Question

[(2 * x - 5 ) : 5 ] x 5=5x13
Va rog!

Answer 1

Răspuns:

Salutare!

[(2×X-5):5]×5=5×13

[(2×X-5):5]×5=65

[(2×X-5):5]=65:5

[(2×X-5):5]=13

(2×X-5)=13×5

(2×X-5)=65

2×X=65+5

2×X=70

X=70:2

X=35

#Succes!

Answer 2

Răspuns:

$((2x - 5) \div 5) \times 5 = 13 \times 5 \\ (2x - 5) \div 5 = 13 \div 5 \times 5\\ 2x - 5= 13 \times 5 \\ 2x = 65 + 5 \\ 2x = 70 \\ x = 70 \div 2 \\ x = 35$

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