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Algebraic Identities

Find:–7 + –8 ...

Question

Find:(–7) + (–8) + (–90)

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Solution

(–7) + (–8) + (–90)
= –7 – 8 – 90
= –15 – 90)
= –105

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Similar questions

Question 4 (c)

Find:

(–7) + (–8) + (–90)

Find:

(a) (− 7) − 8 − (− 25)

(b) (− 13) + 32 − 8 − 1

(c) (− 7) + (− 8) + (− 90)

(d) 50 − (− 40) − (− 2)

(- 7) - 8 - (- 25)

(- 13) + 32 - 8 - 1

(- 7) + (- 8) + (- 90)

50 - (- 40) - (- 2)

(-7)+(-8)+(-90)

Q. In an A.P
i) Given

a = 2, d = 8, S n = 90

a_{9}

a = 7, a_{1} 3 = 35

S_{13}

.

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