You have to recognize that " y plus y " is the same as " 2y ".
This wouldn't be any problem if it was "house plus house" or "dog plus dog" ... you'd know
right away that it was "two houses" or "two dogs". But for some reason, a lot of people get
scared when they see " y plus y ", and totally freeze up.
y + y = 10
2y = 10
Divide each side by 2:
y = 5
-y + y equals 0.
-13
y= -2x
3/Y+7\Y=9 =>Y=10\9
b = y - mx.
If x equals 10 and y equals 10, then 9x plus 8y equals 170.
y=5-x
you need 2 equations to solve for 2 variables
-x + 5y = 10 5y= 11 y = 11/5
Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7
-2y = 10 2y = -10 y = -5
choose the negation of this statement. x plus y equals 10