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Contact [7]
3 years ago
9

Aflati valoarea expresiei 4a+7b+6c stiind ca a+b=16 si b+2c=28 Rapiiid varoog

Mathematics
1 answer:
Blababa [14]3 years ago
4 0

Având în vedere expresiile 4a + 7b + 6c și ecuațiile date a + b = 16 și b + 2c = 28.

4a + 7b + 6c pot fi scrise ca

<em>a + a + a + a + b + b + b + b + b + b + b + c + c + c + c + c.</em>

<em>= (a + b) + (a + b) + (a + b) + (a + b) + (b + 2c) + (b + 2c) + (b + 2c).</em>

Înlocuind valorile a + b = 16 și b + 2c = 28, ajungem


(a + b) + (b + 2c) + (b + 2c) + (b + 2c)

= 16 + 16 + 16 + 16 + 28 + 28 + 28

= 64 + 84

= 148.

<h3>Prin urmare, 4a + 7b + 6c = = 148.</h3>
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