3 years ago

Anyone know this pls help

Mathematics

1 answer:

svet-max [94.6K]3 years ago

7 0

$9x+3y=12\\
3x+y=4\\
y=-3x+4$

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Whats 3.2r + 14.7=6.74

Nata [24]

r=-199/80 is the right answer. First, you had to multiply by 100 from both sides of the equation. And it gave us, $3.2r*100+14.7*100=6.74*100$ . Next, you had to refine, and it gave us, $320r+1470=674$ . Then, subtract by 1470 from both sides of equation. And it gave us, $320r+1470-1470=674-1470$ . Simplify, and it gave us, $320r=-796$ . You can also divide by 320 from both sides of equation. And it gave us, $\frac{320r}{320}=\frac{-796}{320}$ . And finally, simplify, and it gave us the answer is r=-199/80 is the right answer. Hope this helps! And thank you for posting your question at here on brainly. And have a great day! -Charlie