Question

The sum of twice a number and 15 is 9

Answer 1

$\huge \purple{\tt{Answer:}}$

Let the unknown number be x .

$\Large{\underline{\sf{According~to~question}}}$

$\sf {2x+15=9} \\\\\ \implies \sf{2x=9-15} \\\\\ \implies \sf {2x=-6}$

$\implies {\sf {x ={ \dfrac{ - 6}{2}}}} \\\\\ \implies \sf{x=-3}$

Answer 2

Key word: sum


twice a number = 2n

Sum of that and 15 = 2n + 15


is = equals


Answer: 2n + 15 = 9