Question

if 7x‐y=49 and 7x+y=343. then find the value of 6x+2y. need with process​

Answer 1

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Answer 2

Given,

The first equation is = 7x-y = 49

The second equation is = 7x+y = 343

To find,

The value of the equation 6x+2y

Solution,

We have to calculate the individual numerical values x and y from the two given equations. Then we can I get the value used in the final equation to get the final answer.

From, (Equation 1 + Equation 2) we get that,

7x-y+7x+y = 49+343

14x = 392

x = 28

Now, putting the value of the x in the first equation, we get that,

(7×28)-y = 49

196-y = 49

-y = 49-196

y = 147

Value of third equation = (6×28) + (2×147) = 168+294 = 462

Hence, the value of 6x+2y is 462.