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Pleaseeeee help me I was out on Friday so I don't know this and we learned it on Friday and my math teacher wasn't here today so I couldn't ask her

The answer Pleaseeeee help me I was out on Friday so I dont know this and we learned it on Friday and my math teacher wasnt here today so I couldnt ask her class=

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-22=10r+12

like you started, we add 12 to both sides so that theres variables on one side and numbers on the other

-10=10r
now, divide by 10 on each side, so we get R alone

-10/10=r
-1=r
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