Find the sum: $(- 7) + (- 9) + 4 + 16$

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Solution

$(- 7) + (- 9) + 4 + 16$

$= - 7 - 9 + 4 + 16$ ----------(multiplication of signs " $+ \times - =$ ")

$= - 16 + 20 = 4$

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(- 7) + (- 9) + 4 + 16

Question 5 (a)

Find the sum:
(–7) + (–9) + 4 + 16

Find the sum: $\frac{3}{4} + \frac{7}{16}$

1 + \frac{4}{7} + \frac{9}{7^{2}} + \frac{16}{7^{3}} + \frac{25}{7^{4}} + . . . . . .

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