Question

If 3x+2yy=6 and x+y=4, then
a. 2x+y= ?
b. 4x+3y= ?

Answer 1

a.2

b.10

Explanation:

3x+2y=6............(i)

x+y=4..........(ii)

mutiplying eq(ii) by 2 and subtracting from eq(i)

3x+2y-2x-2y=6-8

x=-2

putting the value of x in eq(ii)

-2+y=4

y=6.

a.

2(-2)+6

=-4+6

=2

b.

4(-2)+3(6)

-8+18

=10