Question

- Compute each of the following:
(a) 30 + (-25) + (-10) (b) (-20) + (-5)
(c) 70 + (-20) + (-30) (d) --50 + (-60) + 50
(e) 1 + (-2) + (-3) + (-4) (1) 0+ (-5) + (-2)
(g) 0-(-6) - (+6) (h) 0-2-(-2)​

Answer 1

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ANSWER

=====> 1

==> 30+(-25)+(-10)

==> 30+35

==> 65

=======> 2

==> (-20)+(-5)

==> 25

======> 3

==> 70+(-20)+(-30)

==> 70+50

==> 120

======> 4

==> -50+(-60)+50

==> 110+50

==> 160

========> 5

==> 1+(-2)+(-3)+(-4)

==> 1+9

==> 10

========> 6

==> 0+(-5)+(-2)

==> 0+7

==> 7

==========> 7

==> 0-(-6)-(+6)

==> 6-(+6)

==> 0

==========> 8

==> 0-2-(-2)

==> -2-(-2)

==> 0

Answer 2

RULES OF INTEGERS FOR MULTIPLICATION AND DIVISION

(-)(+) = (-)

(+)(-) = (-)

(+)(+) = (+)

(-)(-) = (+)

ACCORDING TO THE RULES:

(a) 30 + (-25) + (-10)

= 30 - 25 - 10

= 30 - 35

= -5

(b) (-20) + -5)

= -20 -5

= -25

(c) 70 + (-20) + (-30)

= 70 - 20 - 30

= 70 - 50

= 20

(d) -50 + (-60) + 50

= - 50 - 60 + 50

= -60

(e) 1 + (-2) + (-3) + (-4)

= 1 - 2 - 3 - 4

= -8

(f) 0+ (-5) + (-2)

= 0 - 5 - 2

= -7

(g) 0-(-6) - (+6)

= 0 + 6 - 6

= 0

(h) 0-2-(-2)

= 0 - 2 + 2

= 0

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