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How do I do these 2? Explain in steps please!

How do I do these 2? Explain in steps please!-example-1
User Rmn
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1 Answer

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3x+6(846-x)=3846\\ 3x+5076-6x=3846\\ -3x=-1230\\ x=410\\\\ (1)/(3)(6x-21)=-53\\ 2x-7=-53\\ 2x=-46\\ x=-23
User KItis
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