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5x-4x-9=0
We add all the numbers together, and all the variables
x-9=0
We move all terms containing x to the left, all other terms to the right
x=9
| 54=9(x+30 | | -5x+6(2x-4)=-15-2x | | 47.54x2.44=76.82 | | 2/3n+n=10 | | 2(x+2)+3=9 | | x+120+x+x-60=1200 | | v-9/9=9/5 | | 9w-15w=-12 | | -76.82=47.54x2.44 | | —10y-3y=-39 | | 6(9k-3)=3(6-18k) | | 40=-5(3p-2) | | 6/4=4/x-9 | | 6/a+10=3/7 | | 87.66.s=3068.10 | | x-|-42|=108 | | 5y-7+y=7y+21-5 | | 7/3=9/x | | 20/x=15-5 | | k/2=8/4 | | Y=-6x=18 | | 4x=16x+22 | | 6/3=9/9m | | -12=6+b | | 20x+7+32x-17=180 | | 5x=12+13 | | 5+4x-7=4x+25 | | 10x-1(2×+9)=-3(15-4x) | | n+(-14)=19 | | 20x+7=32x-17 | | 1/3x+15=25 | | (37b-6)-9(4b+3)=-3 |