Question

125 - ( x + 48 ) = 10²

120 - x : 4 = 3⁴ : 3¹¹

Answer 1

\(125-\left(x+48\right)=10^2\)

\(\Leftrightarrow125-x-48=100\)

\(\Leftrightarrow77-x=100\)

\(\Leftrightarrow x=77-100\)

\(\Leftrightarrow x=-23\)

\(120-x:4=3^4:3^{11}\)

\(\Leftrightarrow120-x:4=3^{-7}\)

\(\Leftrightarrow120-x;4=\frac{1}{3^7}\)

\(\Leftrightarrow120-x:4=\frac{1}{2187}\)

\(\Leftrightarrow x:4=120-\frac{1}{2187}=\text{119.999542752629}\)

\(\Rightarrow x=\text{119.999542752629}.4=\text{479.998171}\)

Answer 2

125-(x+48)=10²

=>125-(x+48)=100

=>x+48=125-100

=>x+48=25

=>x=25-48

=>x=-23

120-x:4=3⁴:3¹¹

=>120-x:4=1/2187

=>x:4=120-1/2187

=>x:4=262439/2187

=>x=232439/2137x4

=>x=929756/2187