Answer:
[tex]X - 30 \% \ of \ X = 70\\\\Using \ BODMAS \ first \ priority \ for \ 'of'\\\\X - (30 \% \ of \ X) = 70\\\\ X - (\frac{30}{100}\times X) = 70\\\\X - \frac{30X}{100} = 70\\\\\frac{100X -30X}{100} = 70\\\\70X = 70 \times 100\\\\X = \frac{7000}{70} = 100[/tex]
