Question

Daca xy+xz=50 care este valoarea expresiei 3x ×(y+z) va rog urgent

Answer 1

$xy + xz = 50$

$x(y + z) = 50 \: | \div x$

$y + z = \frac{50}{x}$

$3x \times (y + z) = 3x \times \frac{50}{x} = 3 \times 50 = 150$

Answer 2

x (y+z ) = 50

x = 50 / (y+z)

3X x (y+z) = 3 x 50 / (y+z) x(y+z) = 3X x 50 = 150 X

                          50 supra y+z