Answer:
green paper: 20
Explanation:
first you make equation to this word problem,
the equation: (36-x)+26= 42
(x)= green paper
now you have to find (x)
subtract both sides with 26 (36-x)+26-26= 42-26
36-x= 16
subtract 36 from both sides 36-36-x=16-36
x= 20
answer check:
x= 20
substitute (x) with 20
(36-20)+26=42
Now you solve the equation
36-20= 16
16+26= 42
42=42