jennalap9hill
jennalap9hill
20-11-2016
Mathematics
contestada
What is 2r - 6r 8 = 40?
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Kyutiedask10
Kyutiedask10
20-11-2016
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
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vikas467
vikas467
20-11-2016
2r( 1 - 3×8) = 40
2r (1 - 24) = 40
2r(-23)=40
-46r=40
r = -40/46
r. = - 0.86
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