Question

5(x+35)=515

12x-33=3^2.3^3

Answer 1

\(5\left(x+35\right)=515\)

\(\Rightarrow5x+5.35=515\)

\(\Rightarrow5x+175=515\)

\(\Rightarrow5x=340\)

\(\Rightarrow x=68\)

\(12x-33=3^2.3^3\)

\(\Rightarrow12x-33=3^5\)

\(\Rightarrow12x-33=243\)

\(\Rightarrow12x=276\)

\(\Rightarrow x=276:12\)

\(\Rightarrow x=23\)

Answer 2

5.(x + 35 ) = 515

= ( x + 35 ) = 515 : 5 

= x + 35 = 103

= x = 103 - 35

=x = 68