jdh3010

700+1000000=1000700

21(2-x)+12x=44

→42-9x=44

Subtract 44 from both sides

-9x-2=0

Add 2 to both sides

-9x=2

Divide -9 to both sides

x=-2/9

80/125-900=16/25-900=-899.36

$${\mathtt{49}}{\mathtt{\,\small\textbf+\,}}{\mathtt{41}} = {\mathtt{90}}$$

Thanks by the way!

I was answering with a phone

$${\frac{{\mathtt{14}}}{{\mathtt{70}}}} = {\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{7}}}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{7}}\right)}} = {\frac{{\mathtt{1}}}{{\mathtt{5}}}}$$

square root of six=2.4494897428

(x-5)*(x+5)=x^2-25

x/2-3/x=5

Multiply 2x to both sides

x^2-6=10x

Subtract 10x from both sides

x^2-10x-6=0

Add 6 to both sides

x^2-10x=6

→x(x-10)=6

x=$${\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{31}}}}$$ or $${\mathtt{5}}{\mathtt{\,-\,}}{\sqrt{{\mathtt{31}}}}$$

So, x^2/4+9/x^2=28