Answer:
You should use the addition method because when I work by substracting, the point is out fron the line. It's not right!
Answer:
Since i don't know what formula is mentioned. I just used the easiest way to solve :)
Step-by-step explanation:
Answer: p= $8 s= $2.50
Step-by-step explanation:
3p + 4s = 34 and 3p + 7s= 41.50
Since the number of pizzas DIDNT change between these two equations, we can use the total of the second equation to help us find the price of one sandwich.
41.50 - 34 = $7.5 for 3 sandwiches (7s-4s)
So how much is one sandwich? 7.50/3 = $2.50 for each sandwich
now that we know s, it’ll be much easier finding p. We can use one equation to find p.
3p + 4(2.5) = 34 (Solve algebraically)
3p + 10 = 34
- 10 | -10
3p = 24
3p/3 = 24/3
p = $8. Now you can check by substituting the variables!
Answer:
x = 12
Step-by-step explanation:
7x=8x-12
take away the 7x from both sides
0=x-12
add 12 to each side
12=x
check it
7(12)=8(12)-12
84=96-12
84=84