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4-12n=-7 -12n=-7-4 -12n=-11 12n=11 n=11/12 n=0.916666666666666666...
Im not sure if this is -12n or just 12n so I will give you both: -12n -19=77 n= -8 12n-19=77 n=8
13n-12n=14+10 13n-12n=1n 1n=n n=14+10 14+10=24 n=24 so the answer is n=24
n5n+8n-12n13n-12n = n
15-12n=n+2? Do you want to find n? 15=13n+2 (add 12n to each side) 13=13n (subtract 2 from each side) n=1 (divide both sides by 13)