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2.1/3 = -9
0.7 = -9
L <> R
| 9y-3=19+9y | | 21/3=9m | | 4a+2b=a+13 | | -4.9t^2+10t+15=0 | | abs(2x+8)=abs(3x-4) | | -y-2(1+y+1)=-2(y-4)-y | | 2-7b-12b=63 | | x/6-8=-9 | | 180(x)+2400(y)=48000 | | 2y/5-5/6=1/30 | | -41-38= | | x-2(x+5)=14+3(x-2) | | 7/9t=28/36 | | x+0.25x=90 | | 0=y^2+4 | | x+(2*x)=90 | | (z^2)+3z+1=0 | | -11=7(-2/7)-9 | | 6.5-42.25=h | | 12x+2=3x-11 | | 11.3x=-0.4 | | 6.5+42.25=h | | 9/6-2x4 | | 4n-2m=-10 | | f(x)=x^3+2x^2-3 | | 5=5x-35 | | 6.1(3x+7)=133.2 | | 23+4x=5y | | 8(-12x)=32 | | 9m+4[3n-4(2n-3)]=2-3(2n+4) | | 10(x-3)+9=2(3-x) | | 10a-10/10a-16 |