45% of 450 is 202.50
$202.50 is the price of markup
$652.50 is the selling price
3x -4 (5 - x) = 7x -20
3x-20+4x=7x-20
7x-20=7x-20
Answer:
-7, -1, -7
-6, 0, 0
Step-by-step explanation:
x
x+6
7(x+6)
7(x+6)+ x(x+6) = 0
(x+6)(7+x) = 0
x = -6, -7
-6, 0, 0
-7, -1, -7
190
You add everything together
Then, divide by however many numbers you have
210+160+200
570 / 3
190
Hope this helps..
Mark Brainliest Please!
