The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.
A. -2 and -4
B. -2 and 4
C. 2 and -4
D. 2 and 4

Question

The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.
	A.	-2 and -4
	B.	-2 and 4
	C.	2 and -4
	D.	2 and 4

misty1212 · Answer

the sum of five times a number
lets call it $x$ so the sum of $5x$ and two times a second number, lets call it $y$ so $$5x+2y$$ is $18$or 
$$5x+2y=18$$

misty1212 · Answer

the difference of 3 times the first number and seven times the second number is $-22$ translates in to 
$$3x-7y=-22$$

misty1212 · Answer

your job it to solve 
$$5x+2y=18\
3x-7y=-22$$

misty1212 · Answer

do you know how to do that?

cenaida · Answer

no

shamim · Answer

Just let one number is =x
Another number is=y

misty1212 · Answer

lol then you can't solve this problem
you can do it by hand or by machine

misty1212 · Answer

you pick

cenaida · Answer

is it D?

anonymous · Answer

$$\{5 a+2 b=18, 3 a-7 b=-22\} , \{a\to 2, b\to 4\} $$

shamim · Answer

Fivs times of a number x=5x
Right?