Question

Stiind ca x+y=42 si m=10 ,calculati:a)m×x+m×y
b)2x+2y+2m
c)m:2×(x+y )

Answer 1

a) ... = m*(x+y) = 10*42 = 420; 

b) ... = 2*(x+y)+2m = 2*42+2*10 = 104;

c) ... = 10 : 2 * 42 = 5 * 42 =210;

Answer 2

x+y=42 si m=10

a)m×x+m×y =10x+10y=10(x+y)=10*42
b)2x+2y+2m=2(x+y)+2m=2*42+2*10=104
c)m:2×(x+y ) =10/2*42=10/84  ???