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30x+3x*90=1000
We move all terms to the left:
30x+3x*90-(1000)=0
Wy multiply elements
30x+270x-1000=0
We add all the numbers together, and all the variables
300x-1000=0
We move all terms containing x to the left, all other terms to the right
300x=1000
x=1000/300
x=3+1/3
| 30*x+3x*90=1000 | | 42.6+n=98.12 | | 42.6+n=98.12 | | 42.6+n=98.12 | | 42.6+n=98.12 | | 42.6+n=98.12 | | 35+c=200 | | 35+c=200 | | 35+c=200 | | 35+c=200 | | x/8=-3x8 | | 35+c=200 | | x/8=-3x8 | | 35+c=200 | | 35+c=200 | | z+(5z-10)=35 | | z+(5z-10)=35 | | z+(5z-10)=35 | | z+(5z-10)=35 | | z+(5z-10)=35 | | z+(5z-10)=35 | | 6a-6=5a+5 | | 35+c=200 | | 35+c=200 | | 35+c=200 | | 35+c=200 | | 0.69x+56=1.49x0.69 | | x-(12-2x)=-3 | | 0.69x+56=1.49x0.69 | | 0.69x+56=1.49x0.69 | | 47*x=360 | | 8/11=9/u |