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Mathematics, 12.05.2021 17:50 paper

Richard had 180 total minutes to do homework, mow the grass, and walk the dog. He spent 3(x+4) minutes mount the grass.

He spent (x+3) minutes working on homework.

He walked the dog for x minutes.

How many minutes did Richard spend mowing the grass?

(Please don’t give me one of those files as an asnwer, it gives me bugs on my computer, I really need an explanation on how to do this)

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