December 2018 2 78 Report
1. a. 5 + (-2) =
b. 7 + (-7) =
c. -5 + (-2) =
d. -3 + (-8) =
e. 2 + (-5) =
f. 4 + (-11) =
g. -6 + 4 =
h. -10 + 15 =
i. -34 + 45 =
j. -17 + (-19) =

2. a. 10 + (-7) + 7 =
b. 13 + (-8) + 3 =
c. 10 + (-5) + (-2) =
d. -8 + (-3) + (-5) =

3.Tentukan nilai X :
a. X + (23) = 0
b. X + (-23) = 0
c. -13 + X = 0
d. - X + 34 = 0

4. Sama dengan no.3 :
a. -13 + x =
b. 8 + x =
c. x + 5 =
d. x + (-5) =

5. tentukan Invers jumlah (lawan) dari :
a. 7
b. -3
c. -15
d.-234
e. 567
f. -1
g. a
h. -10b
i. 25c
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