5+y+2y? = 5+3y?
It is y+3y-2y = 2y simplified
Then 3y+1-2y can be simplified to y+1
-4(7x-3y-z)-(-6)(9x-z+2)
That would depend on the plus or minus value of 3y or maybe an equality is missing none of which have been given.
5+y+2y? = 5+3y?
(14x-2y)+(7x-3y)+(-3x) = 14x-2y+7x-3y-3x =(14+7-3)x-(2+3)y =18x-5y
3y - 3 = 2y + 5 3y - 2y = 5 + 3 y = 8
If 3y = 12, 2y = 8
It is y+3y-2y = 2y simplified
X + 3y - 2y + 3y = X + (3-2+3)y = X + 4y
5x + (3y-x) + (10-2y) = 5x + 3y - x + 10 -2y = 5x - x + 3y - 2y + 10 = 4x + y +10
2y + 3 = 3y + 9 2y - 3y = 9 - 3 or -y = 6 so y = -6
Then 3y+1-2y can be simplified to y+1
5y-2y= 3y+2 5y-2y-3y= 2 0y= 2
-3y + y = -2y
4x+3y-2x+y 4x-2x+3y+y 2x+4y Taking out 2 common 2(x+2y) Hence the required answer is 2(x+2y)