I need some help with this one

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Step-by-step explanation:

300+90+9

-45=0+40+5

Step-by-step explanation:

399-45=354

welll its a very hard question but ill

step-by-step explanation:

first you take the 6 dollars and add 10 to it then add the 50 to that then multiply by 8 with xy and your answer will be

hope this