Multiply bottom equation by -3 to add and eliminate y’s.
So...
5x-15y=10
+-9x+15y=18
You get -4x=28 so x=-7
Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3
Check in other equation
3(-7)-5(-3)=
-21+15=-6
So x= -7 and y= -3
The value of x is 13 for the first attachment.
If you would like to expand the expression 7 * (9 * x - 2), you can do this using the following steps:
7 * (9 * x - 2) = 7 * 9 * x - 7 * 2 = 63 * x - 14
The correct result would be 63 * x - 14.
Step-by-step explanation:
- example c is <em>c</em><em>orrect</em>
- <em>do</em><em>n't</em><em> </em><em>ch</em><em>ange</em><em> </em><em>t</em><em>he</em><em> </em><em>q</em><em>uestion</em>
- <em>I</em><em> </em><em>l</em><em>ike</em><em> the</em><em> </em><em>q</em><em>uestion</em>
Answer:
Step-by-step ewhat the other guy saysxplanation: