(i)-4÷\(\frac{2}{3}\)
= -4×\(\frac{3}{2}\)
= -\(\frac{12}{2}\)
= -6
(ii) -\(\frac{3}{5}\)÷2
= -\(\frac{3}{5}\)×\(\frac{1}{2}\)
= -\(\frac{3}{10}\)
(iii) -\(\frac{4}{5}\)÷(-3)
= -\(\frac{4}{5}\)×\(\frac{1}{-3}\)
= (-4)×\(\frac{1}{5}\)×(-3)
= \(\frac{-4}{-15}\)
= \(\frac{4}{15}\)
(iv) -\(\frac{1}{8}\)÷\(\frac{3}{4}\)
= -\(\frac{1}{8}\)×\(\frac{4}{3}\)
= -\(\frac{4}{24}\)
= -\(\frac{1}{6}\)
(v) -\(\frac{2}{13}\)÷\(\frac{1}{7}\)
= -\(\frac{2}{13}\)×7
= -\(\frac{14}{13}\)
(vi) -\(\frac{7}{12}\)÷(-\(\frac{2}{13}\))
= -\(\frac{7}{12}\)×\(\frac{13}{-2}\)
= (-7)×\(\frac{13}{12}\)×(-2)
=\(\frac{91}{24}\)
(vii) \(\frac{3}{13}\)÷(-\(\frac{4}{65}\))
= \(\frac{3}{13}\)×\(\frac{65}{-4}\)
= 3×\(\frac{65}{13}\)×(-4)
= \(\frac{195}{-52}\)
= -\(\frac{15}{4}\)
Write equations for the following statements:
(i) The sum of numbers x and 4 is 9.
(ii) 2 subtracted from y is 8.
(iii) Ten times a is 70.
(iv) The number b divided by 5 gives 6.
(v) Three-fourth of t is 15.
(vi) Seven times m plus 7 gets you 77.
(vii) One-fourth of a number x minus 4 gives 4.
(viii) If you take away 6 from 6 times y, you get 60.
(ix) If you add 3 to one-third of z, you get 30