Question

cuanto vale x?
$10 + x \div 5 - 9 = \sqrt{49}$
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Answer 1

Respuesta:

$10 + x \div 5 - 9 = \sqrt{49} \\ 1 + x \div 5 = 7 \\ x \div 5 = 7 - 1 \\ x \div 5 = 6 \\ x = 6 \times 5 \\ x = 30$