3 (had to feel the space with words)
Answer:
Step-by-step explanation: x + 1 = 9x - 3
x + 1 = 9x - 3
(minus x from both sides)
1 = 8x -3
(add 3 to both sides)
4 = 8x
(flip the equation)
8x = 4
(divide both sides by 8)
x = 4/8
x = 1/2 or 0.5
If Joe gave 5 pics to site A. Site A would give him $0.75*5=$3.75
If Joe gave 5 pics to Site B. Site B would give him $0.25*5=$1.25
3.75-1.25=2.50
Site A gave him $2.50 more than Site B.
The way I like to solve proportions is by cross multiplying and dividing. First yo multiply the diagonals and then you divide by the other number. So if your proportion is 7/5 = x/3, your equation would be 7*3/5. So 7*3 is 21, so your equation is now 21/5. With some long division, you'll see that 21/5 = 4.2 That's your answer, feel free to ask more questions if you need!!(:
