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q + 5/9= 1/6 from big ideas mathbook

Sagot :

Q+5/9=1/6
Q+10/18=3/18
-10/18     -10/18
Q=-7/18
9We have such eqation
Q[tex]+ \frac{5}{9} = \frac{1}{6} [/tex]    /*9   (multiply both sides by 9)
9Q+5=[tex] \frac{9}{6} [/tex]    /-5 both sides
9Q=[tex] \frac{9}{6}- 5[/tex]
9Q=[tex] \frac{9}{6}- \frac{5*6}{6} [/tex]
9Q=[tex] \frac{9-30}{6} [/tex]
9Q=-[tex] \frac{21}{6} [/tex]        /:9 divide both sides by 9
Q=-[tex] \frac{21}{6}:9 [/tex]
Q[tex] \frac{21}{6*9} =- \frac{21}{54}=[tex] \frac{7}{18} [/tex] - its the answer