Selina solutions

Selina solutions

Grade 7

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Question 11

Q11) Express \frac{4}{7} as a rational number with numerator :

(i) 12

(ii) -12

(iii) -16

(iv) -20

(v) 20

Solution 11:

(i) \frac{4\times3}{7\times3}=\frac{12}{21}

(ii) \frac{4\times\left(-3\right)}{7\times\left(-3\right)}=\frac{-12}{-21}

(iii) \frac{4\times\left(-4\right)}{7\times\left(-4\right)}=\frac{-16}{-28}

(iv) \frac{4\times\left(-5\right)}{7\times\left(-5\right)}=\frac{-20}{-35}

(v) \frac{4\times5}{7\times5}=\frac{20}{35}

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