1.

If x=2;y=2 is the solution the equation 5x +2y +9=a. find the value of a.​

Answer»

Solve for x. The example equation becomes "x + 10 - 15x = 20," which is then "-14 x + 10 = 20." Subtract 10 from each SIDE, divide by 14 and you have END up with x = -10/14, which simplifies to x = -5/7. Plug in the x VALUE in to the first equation to FIND out the y value.



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