Question

if we add a number 7 to twice a number ,we get 49

Answer 1

Heya !!


Let number be X.




According to the question,



2X + 7 = 49



2X = 49 - 7



2X = 42



X = 42/2



X = 21



Number = X = 21.

Answer 2

$\mathbf{Let \: \: Required \: \: number \:\: be \: \: x } \\ \\ \\ According \; \; to\; \; the \;\;question, \\ \\ \\ 2x + 7 = 49 \\ \\ \rightarrow 2x = 49 - 7 \\ \\ 2x = 42 \\ \\ x = \frac{42}{2} \\ \\ x = 21$

Hence Required number is 21