Question

X*y+x*z+x = 465
Y+ z = 92

Answer 1

Răspuns:

x = 5

Explicație pas cu pas:

xy + xz + x = 465

y + z = 92

xy + xz + x = 465 <=> x(y+z) + x = 465 =>

x(y+z+1) = 465 <=>

x(92+1) = 465

x = 465:93 =>

x = 5