Question

(23-42÷7+y×7):9=5
(23-6+y×7):9=5
(17+y×7):9=5​

Answer 1

Răspuns:

$(23 - 42 \div 7 + y \times 7) \div 9 = 5$

$(23 - 6 + 7y) \div 9 = 5$

$(17 + 7y) \div 9 = 5$

$17 + 7y = 5 \times 9$

$17 + 7y = 45$

$7y = 45 - 17$

$7y = 28$

$y = \frac{28}{7}$

$y = 4$