Question 180513
5x-y=-18
4x+2y=92
These are both the same problem.
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I think it's one problem, and you want to solve for x and y.
There are 2 equations and 2 unknowns, so it might work out.
One method it elimination.  Multiply one of the eqns by something to get the same coefficients for one of the unknowns.
If the 1st eqn is multiplied by 2, it will have -2y in it, and the 2nd eqn has 2y also.
5x-y=-18 --> 10x - 2y = -36
10x - 2y = -36
4x  + 2y = 92  Then add the 2 eqns
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14x + 0y = 56
x = 4 xxxxxxxxxxxxxxxxxx  That's one
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Then sub 4 for x into an eqn to find y
4x+2y=92
16+2y=92
2y = 76
y = 38  yyyyyyyyyyyyyyyyyyy
That's it.