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2a=a=
We move all terms to the left:
2a-(a)=0
We add all the numbers together, and all the variables
a=0
| 4+-2g=12 | | -(-8x-1)=8-3(-3-2x) | | 4x+x=180° | | 28*2=x-100 | | 12n-20=20+10n | | 3x+60+65+100+120=360 | | 7x-3x=x*x | | 2/4=16/x | | w/2+6=14 | | 15w-13w=-12 | | -2x+32=-6(x-8) | | 13/x+4/7=9/7 | | 12/24=48/x | | 9y−–5=41 | | 21+5y=37 | | x+105+125+135+135+140+150=360 | | -4d-6=-6 | | K=46k= | | 21+5y=31 | | 4(x-8)=4x+22 | | 4x+1+5x+3+2x+11=180 | | 0.3x+6.8=0.5x+4.6 | | 7y-55=90 | | x+60+95+128=360 | | x^2-17=4(x+1) | | 4q−–2=10 | | -5(8+2n)=2n-28 | | -2(g-10)=8 | | h7+ 25=33 | | x+6+1+77=180 | | x+73=4 | | 2/9y=-1458 |