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9+8n=145
We move all terms to the left:
9+8n-(145)=0
We add all the numbers together, and all the variables
8n-136=0
We move all terms containing n to the left, all other terms to the right
8n=136
n=136/8
n=17
| 5x+8+2x-3=19 | | c+0.18c=236 | | ((13x-35)+(5x-19)=(2x+14)) | | 21/14=3/n | | 2/3x+1/4=5/3 | | 8d-3d=625 |