Brainliest + points! can someone explain to me how this equation got x - 25 15 / 19 in the 3rd line. then getting the answer 16.8?

They multiplied 7/19 with - 70. If we write this as a fraction it looks like this:


When you multiply these fractions you get this:


You get 25 15/19 because you divide 490 by 19.

Next what you want to do is put 9 onto the right side of the equasion. So now you have:


And you put 9 onto the right side of the equasion...


Now we can see that we can add 9 to -25 15/19


We need a common denominator to solve this, which in this case is 19. It goes as follows:


See that we changed -25 15/19 back into 490/19 to solve the equasion easier. The result is -16 15/19 which is approximately -16.8 in decimal form.

I hope I explained it well!

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!