Miguel Santos

I have two questions for you and for both of these it would help to know something about the Roman Catholic Church in the past. Anyway, firstly, did dioceasan bishops always have to reside within the confines of their dioceases? Also, who was the first to...

For 1), just muttiply the bottom one by -7 throughout to get 28x+-7y=-175. 7 and -7 add to 0, so you have gotten rid of the y's. 31x=-132 divide both sides to get what your x is and then use that x to go back and find y. For 2) the best first move to make...

See my above answer. Elimination as a process pretty much works the same no matter what, even if what you have to work with is a little ugly.