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5r^2^2-10r=0
| 3(3x-2x)=2x-11 | | w^2-12.5w+84=0 | | 1=-6(1-p) | | .5x+7=x+36 | | 5^x*2^((2x-1)/(x+1))=50 | | 44x+12-4x=8 | | 3x-7/5=2x | | (3x-7)/5=2x5 | | 90n-n=180 | | 3^x-2=11 | | 78=x^2-3 | | 3^2x+1÷9=27 | | Y+(y/2)=550 | | 4/28=x/25 | | 13+2(1-4)=8u-5(u+7) | | 7k-9=3k+11 | | 19/20=p−11/4 | | 2.4*b=6.72 | | 3*b=6.72 | | 12=(x^2+11)/5 | | 13+2(1-4)=8u-5(u+7 | | 5^x+5^3*x/3=250 | | 5(a+-7)=25 | | 5^x+123^x/3=250 | | 0.25=-x/4 | | 3x+7=2x-19+x=180 | | 89-3x=x | | 5(2n-7)=5 | | 12=1,6x | | 103/100*x=10300 | | x4+3x+1=0 | | 4x+2(3x-2)=2-6(x+2) |