If: 2x-3y = -15 and x = 4y
Then: x = -12 and y = -3
Chat with our AI personalities
It is impossible to give the value of t when it is not defined.
12-4y=y-3 (subtract 12 from both sides) -4y=y-15 (subtract y from both sides) -5y=-15 (multiply both sides by -1 to make them positive) 5y=15 (divide by 5) y=3
4y -2 = 6 4y = 6 + 2 4y = 8 y = 2
x = 4y 3x - 2y = 20 Substituting the value of x into the second equation, 3*(4y) - 2y = 20 ie 12y - 2y = 20 or 10y = 20 so that y = 2 Then x = 4y = 4*2 = 8. So (x , y) = (8 , 2)
-0.82 , -4.82