Question

Examine this system of equations. What integer should the second equation be multiplied by so that when the two equations are added together, the x term is eliminated?

Three-fourths x + StartFraction 1 Over 7 EndFraction y = 6

StartFraction 1 Over 8 EndFraction x minus three-fifths y = 16

Answer 1

Explanation:

we should multiply the 1/8 on the 2nd equation, by some number "n", such that our result will be equals to -3/4, namely the above x-coefficient but negative, or different sign, so (rest of explanation is in the image)

Answer 2

-6

Explanation: