Well first you have to add common like terms in this case 2r and -6r to get -4r now your equation is -4r+8=40, now subtract 8 from both sides to leave r by itself and get -4r=32, now divide both sides by -4 to get r=-8
Hope this helps
$304 is the answer because 456/3 and then multiply by 2
Answer:
64
70
72
Step-by-step explanation:
