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suppose 3x + 4y = 52 and 5x+y = 30. what is the value of 8x-2y?​

Sagot :

Briannaserenity0736idn
The Answer is 12....

LET ME EXPLAIN!!

3x + 4y = 52
5x + y = 30 |• (-4)
+
3x + 4y = 52
-20x - 4y = -120 |• Add those up. ____________
-17x = -68 |• (-17)
X = 4


Since you found that out you put the Value of x to the second equation like so:

5(4) + y = 30
20 + y = 30 | -20
y = 10

Now we know the other Equation times to add/subtract all the answers that is given so:

8x - 2y = 8(4) - 2(10) = 32 - 20 = 12

So The answer is 12...

Hope this helps you Have a good day...
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