Answer:
(2,0)
Step-by-step explanation:
2x-y=4 equation 1
3x+y=6 equation 2
5x=10 eliminate y by adding equations
x=2
solve for y
2x-y=4
2(2)-y=4
4-y=4
-y=0
y=0
check answer:
3x+y=6
3(2)+0=6
6=6
$49 because $534+$54=$588,then,$588÷12 months=$49 dollar
=> 5x + 9 = 4
Adding - 9 on both sides,
=> 5x + 9 - 9 = 4 - 9
=> 5x = - 5
Divide by 5 on both sides,
![= > \frac{5x}{5} = \frac{ - 5}{5}](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20%20%5Cfrac%7B5x%7D%7B5%7D%20%20%3D%20%20%5Cfrac%7B%20-%205%7D%7B5%7D%20)
=> x = - 1
Hence the value of the variable x is - 1
Explanation:
This can be explained by thinking numbers on the number line as:
Lets take we have to multiply a positive number (say, 2) with a negative number say (-3)
<u>2×(-3)</u>
Suppose someone is standing at 0 on the number line and to go to cover -3 , the person moves 3 units in the left hand side. Since, we have to compute for 2×(-3), The person has to cover the same distance twice. At last, he will be standing at -6, which is a negative number.
A image is shown below to represent the same.
<u>Thus, a positive times a negative is a negative number.</u>