Answer:
17x+7y+10
Explanation:
y+4+3(y+2)
you have to multiply 3 by the numbers/variables in the parenthesis
y+4+3y+5
Do the same to the other equation
5x+3(y+4x)
5x+3y+12x
Set an equation that will let you add their like terms.
y+4+3y+5+5x+3y+12x
I'm going to add like terms with the y
y+3y+3y = 7y
Now like terms with x
5x+12x = 17x
Now put them all as a single equation
17x+7y+10