Question

Acellus. Solve for x. x = ?

Answer 1

according to basic proportionality theorem

`\qquad\sf {:}\longrightarrow 25/35=x/63`

`\qquad\sf {:}\longrightarrow 5/7=x/63`

`\qquad\sf {:}\longrightarrow 7x=63×5=315`

`\qquad\sf {:}\longrightarrow x=315/7=45`