If 7p + 5q = 2 and 8p - 9q = 17, then -p + 14q =

Question

johnweldon1993 · Answer

*Hint...try subtracting the 2 equations

$$7p + 5q = 2$$
-
$$8p - 9q = 17$$

Ill start you off...when you subtract 7p = 8p you get -p  *looks like the start of your answer...

when you subtract 5q - (-9q) you get 5q + 9q = 14q *looks even better...

so to figure out what -p + 14q equals...just subtract 2 - 17.....= ...?

anonymous · Answer

The answer choices are
a. 15
b.19
c.-15
d.-19
e.1

johnweldon1993 · Answer

Right...just follow what I said above...

I showed you how to arrive at the equation they wanted....and I've given you the way to calculate the answer

2 - 17 = ...?