Question

Daca x=3 si y+z=10, calculeaza:

100xX-(9xY+9xZ)

Answer 1

100x - (9y+9z) =
100x - 9×(y+z) =
100×3 - 9×10 =
300 - 90 = 210

Answer 2

100×3-9(y+z)=300-9×10
=300-90
=210