Question

afla nr necunoscut:
909:9-(9x9:X-9)=101

60-10:(37-4xA=50

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

$909 \div 9 - (9 \times 9 \div x - 9) = 101$

$909 \div 9 - (9 \times 9 \div x - 9) = 101$

$x = 0$

$101 - ( \frac{9 \times 9}{x} - 9) = 101$

$- ( \frac{81}{x} - 9) = 0$

$- \frac{81}{x} + 9 = 0$

$- \frac{81}{x } = - 9$

$81 = 9x$

$9x = 81$

$x = 9$