Question

x+10y=105 x+15y=155 solve by elimination​

Answer 1

Answer:

x=-5 y=11

Step-by-step explanation:

since the coeffiecient of x is same

subtracting both eqns

x+10y=105 -(x+15y=155)

-5y=-55

y=11

put y =11 in eqn x+10y=105

x+110=105

x=-5

Verification:

put x = -5 and y=11 in first eqn.

-5+10×11=105

-5+110=105

105=105

l.h.s = r.h.s.

hence verified