What is 1-1-10-90-55-5-10-15-15 nbsp-

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Properties of Addition and Subtraction of Integers

what is 1-1+1...

Question

what is 1-1+10+90-55-5-10-15-15

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Let a = 1 1 1....1 (55 digits), b=1 +10+10 $^{2}$ +....+10 $^{4}$ , c =1+10 $^{5}$ +10 $^{10}$ +10 $^{15}$ +....+10 $^{50}$ , then

b = 1 + 10 + 10^{2} + 10^{3} + 10^{4}

c = 1 + 10^{5} + 10^{10} + 10^{15} + . . . + 10^{50}, t h e n

Multiply:

(1) (−10) by (−15)

(2) (+35) by (−5)

(3) (−15) by (+8)

(4) (+10) by (−10)

(5) (+100) by (−10)

y = 1 - \frac{1}{5} + \frac{1 \cdot 4}{5 \cdot 10} - \frac{1 \cdot 4 \cdot 7}{5 \cdot 10 \cdot 15} + \dots \infty

8 y^{3} =

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