Very interesting !
While you're here, how would you like to know what 'r' is ?
You can find it like this:
-3r - 13r = 2
-16r = 2
Multiply both sides by -1:
16r = -2
Divide both sides by 16:
r = -2/16 = -1/8
Chat with our AI personalities
-16r=2 divide both sides by -16 and your answer is -1/8
(3r + 2)(r - 5)
4r +3 = 3r-2 r + 3=-2 r=-5 basically collect terms so that you get one coefficient of r (in this case 4r on one side and 3r on the other. To get the three r over to the other side you subtract 3r on both sides.) Then r+ 3=-2, so that's simple algebraic manipulation.
3r - 9r = 18 wright equaton -6r = 18 combine like terms r = -3 solve
r - 10 + 100 - 3r = -2r + 90