Respuesta :
x-3y= -3x +3y=9
collect like terms
-3x will go to x and it will turn to
x+3x And -3y will go to +3y and it will turn to
×+3x=+3y+3y=9
solving time.
x+3x is 4x
3y +3y =6y
4x+6y =9
remove the 4x for now.
6y divided by 9.
3 in 6 is 2 and 3 in 9 is 3.
therefore 4x =2=9
4/2=2
2x=9.
4and half is the answer
Answer:
x = 3
y = 2
Step-by-step explanation:
x - 3y = -3
x + 3y = 9
Solve for x in the second equation.
x = 9 - 3y
Pu x as 9 - 3y in the first equation and solve for y.
9 - 3y - 3y = -3
9 - 6y = -3
-6y = -12
y = 2
Put y as 2 in the second equation and solve for x.
x = 9 - 3(2)
x = 9 - 6
x = 3