Soal:
1. 29 + ..... = 11
2. 12 + ..... = 37
3. 15 + ..... = -5
4. .... + 35 = 60
5. .... + (-15) = 40
6. -20 + ..... = 12
Note: buat garis bilangan nya ya
Penjelasan dengan langkah-langkah:
misalkan bilangan kosong itu adalah x, maka :
1.
29 + x = 11
x = 11 - 29
x = -18
2.
12 + x = 37
x = 37 - 12
x = 25
3.
15 + x = -5
x = -5 - 15
x = -5 + (-15)
x = -20
4.
x + 35 = 60
x = 60 - 35
x = 25
5.
x + (-15) = 40
x - 15 = 40
x = 40 + 15
x = 55
6.
-20 + x = 12
x = 12 + 20
x = 32
Penjelasan dengan langkah-langkah:
pemisalan :
a adalah bilangan yg menempati pada titik-titik.
[tex] \: [/tex]
- soal 1
29 + ... = 11
29 + a = 11
a = 11 - 29
a = -18
- soal 2
12 + ... = 37
12 + a = 37
a = 37 - 12
a = 25
- soal 3
15 + ... = -5
15 + a = -5
a = -5 - 15
a = -20
- soal 4
... + 35 = 60
a + 35 = 60
a = 60 - 35
a = 25
- soal 5
... + (-15) = 40
a + (-15) = 40
a = 40 - (-15)
a = 55
- soal 6
-20 + ... = 12
-20 + a = 12
a = 12 - (-20)
a = 32
[tex]\pink{ \underline{ \color{pink}\underline{\bf \color{ee70b7}{Dijah \: ♡ \: Naila}}}} \: \color{ff24a7}{ྀ࿐}[/tex]
[answer.2.content]
