Question

(bx9-78:2)+4x25=1492​

Answer 1

Răspuns:

$\bf (b \times 9 - 78 \div 2) + 4 \times 25 = 1492 \\ \\ \bf (b \times 9 - 39) + 100 = 1492 \\ \\ \bf b \times 9 - 39 = 1492 - 100 \\ \\ \bf b \times 9 - 39 = 1392 \\ \\ \bf b \times 9 = 1392 + 39 \\ \\ \bf b \times 9 = 1431 \\ \\ \bf b = \frac{1431}{9} \Rightarrow \blue{ \boxed{ \bf b = 159} }$