Nancy and Kevin collect coins. Nancy has x coins. Kevin has 6 coins fewer than two times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Kevin have.

if x decreases by 4 then y increases by 10

step-by-step explanation:

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