Need help to solve Solving system of equation by Substitution method ( standard form) y= -7x-23
3x-4y= 30

This is what I have so far, but I'm stuck at the last part where I have to divide -25x with 122 which gave me a decimal number.

Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

For what values of x is x2 + 2x = 24 true?