Question

Solve $9x-7\underset{–}{<}28+4x;xϵW$

Answer 1

$9x-7\underset{–}{<}28+4x$

$Rightarrow9x-4x-7\underset{–}{<}28+4x-4x\left(Subtracting4x\right)$

$\Rightarrow 5x-7\underset{–}{<}28$

$\Rightarrow 5x-7+7\underset{–}{<}28+7\left(Adding7\right)$

$\Rightarrow 5x\underset{–}{<}35$

$\Rightarrow \frac{5x}{5}\underset{–}{<}\frac{35}{5}\left(Dividingby5\right)$

$\Rightarrow x\underset{–}{<}7$

$\therefore$ Required answer = {0, 1,2,3,4,5,6,7}