6x– 9y = 3
x-9y = -22

Step-by-step explanation:

6x-9y=3

+x-9y=-22

first you take x-9y=-22 *-1  which will equal -x+9y=22

then you add

6x-9y=3

+-x+9y=22

5x=25

÷5    ÷5=  x=5         then you plug  5 into each x spot

actually what is a question i don't understand

area of rectangle a is 2 times that of rectangle b that means 2x+x =   36cm^2

3x = 36cm ^2

x = 36/3

x= 12cm^2

and 2x = 24cm^2

now side of square = are divided by sides = 36/4 = 6cm

that means length of rectangle a and b is 6cm too

now for rectangle a,

l*b = area

= 6*y=24

y=24/6 = 4

therefore dimensions of rectangle a are- length = 6cm, breadth = 4cm

and for rectangle b, length = 6cm and breadth = 6-4 = 2cm.

hope this .