Question

If 3x +2y =10 and 2x +3y =15 , find the vale x+y

Answer 1

Answer:

3x+2y=10___(i)

2x+3y=15___(ii)

Multiply eqⁿ (i) by 2 and eqⁿ(ii) by 3.

6x+4y=20

6x+9y=30

-. -. -

________

-5y= -10

y=2

Putting y = 2 in eqⁿ(i),

3x+2y=10___(i)

3x+2(2)=10

3x+4=10

x=6/3

X=2.

Hence the value of:

x= 2

And

y= 2