CONTOH !
(+2) + (-5) - (-4)
= +2 -5 -4
= -3 +4
= +1
SOAL !
1) -3 + (-2) - (-9)
= ...?
= ...?
= ...?
2) 8 - (+7) - 5
= ...?
= ...?
= ...?
3) -2 - (-3) + 7 + (-4)
= ...?
=...?
=...?
4) 3 + (-8) - (-5) - 1
= ...?
= ...?
= ...?
tolong sama caranya ")
(+2) + (-5) - (-4)
= +2 -5 -4
= -3 +4
= +1
SOAL !
1) -3 + (-2) - (-9)
= ...?
= ...?
= ...?
2) 8 - (+7) - 5
= ...?
= ...?
= ...?
3) -2 - (-3) + 7 + (-4)
= ...?
=...?
=...?
4) 3 + (-8) - (-5) - 1
= ...?
= ...?
= ...?
tolong sama caranya ")
Jawaban:
1. -3 + (-2) - (-9) =
= -3 -2 + 9
= -5 + 9
= 4
2. 8 - (+7) - 5 =
= 8 - 7 - 5
= 1 - 5
= -4
3. -2 - (-3) + 7 + (-4) =
= -2 + 3 + 7 - 4
= 1 + 7 - 4
= 4
4. 3 + (-8) - (-5) - 1 =
= 3 - 8 + 5 - 1
= -5 + 5 - 1
= -1
[tex]\sf \boxed{\sf \green{answer \: by} \: \blue{barujalan265} }[/tex]
Jawaban Dan Cara
1. -3 + ( -2 ) - ( -9 ) =
[ -3 + ( -2 ) ] - ( -9 ) =
[ - ( 3 + 2 ) ] - ( -9 ) =
-5 - ( -9 ) =
-5 + 9 = 4
2. 8 - ( +7 ) - 5 =
8 - 7 - 5 =
1 - 5 = -4
3. -2 - ( -3 ) + 7 + ( -4 ) =
-2 + 3 + 7 + ( -4 ) =
1 + 7 + ( -4 ) =
8 + ( -4 ) = 4
4. 3 + ( -8 ) - ( -5 ) - 1 =
-5 - ( -5 ) - 1 =
0 - 1 = -1
Pembahasan
Bilangan bulat adalah bilangan yg terdiri dari bilangan positif, bilangan nol, dan bilangan negatif