Help someone to help me :( in number 2 and 3

Mathematics

1 answer:

sveticcg [70]2 years ago

7 0

So the things that you need to know are in the picture I have to see if I can help you with the other one hope this helps.

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What is the value of x

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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