Question

solve the system of the equation what is the solution?
7u+v=27
7u=+43

Answer 1

Take the second equation and solve it for u. Then substitute the result into the first equation and solve it for v.

u = 43/7 (first part of solution)

Substitute into first equation

7(43/7) + v = 27
43 +v = 27
v = -16

So, u = 43/7, v = -16

Answer 2

im lost it the answer would then be -16 right for v but what about u

Answer 3

The answer for u is given solely by the second equation. If I gave you:

7u = 43

What would u be?

Answer 4

6.14

Answer 5

right ????

Answer 6

Well, yes, if you are required to provide an exact answer. Otherwise, the answer is 43/7.

Answer 7

But after I know what u is, I can substitute that value into equation 1, 7u+v=27. Then I have a single unknown and can solve!