6.07 which expressions are equivalent to 3(x + 3y + 2x - y

and are equivalent to

Step-by-step explanation:

Given

Required

Possible Equivalents

To start with; we need to simplify the expression in the bracket;

Collect like terms

At this point; we can conclude that is equivalent to

Solving further, by expanding the bracket

At this point; we can also conclude that is equivalent to

Hence,

and are equivalent to

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk