Jawab:
1. 4 + m = 15
Tahapan :
4+m=15
4+m-4=15-4
m=11
Penyelesaian:
m = 11
Bukti:
4+11=15
15 = 15 (benar)
2. 6 = a - 3
6 = a - 3
6 + 3 = a - 3 + 3
9 = a
a = 9
6 = 9 - 3
6 = 6 (benar)
3. x - 8 = 16
x - 8 = 16
x - 8 + 8 = 16 + 8
x = 24
24 - 8 = 16
16 = 16 (benar)
4. 17 = p - 6
17 = p - 6
17 + 6 = p - 6 + 6
23 = p
p = 23
17 = 23 - 6
17 = 17 (benar)
5. 20 = 8x - 4
20 = 8x - 4
20 + 4 = 8x -4 + 4
24 = 8x
24 : 8 = 8x : 8
3 = x
x = 3
20 = 8x3 - 4
20 = 24 - 4
20 = 20 (benar)
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Jawab:
1. 4 + m = 15
Tahapan :
4+m=15
4+m-4=15-4
m=11
Penyelesaian:
m = 11
Bukti:
4+m=15
4+11=15
15 = 15 (benar)
2. 6 = a - 3
Tahapan :
6 = a - 3
6 + 3 = a - 3 + 3
9 = a
Penyelesaian:
a = 9
Bukti:
6 = a - 3
6 = 9 - 3
6 = 6 (benar)
3. x - 8 = 16
Tahapan :
x - 8 = 16
x - 8 + 8 = 16 + 8
x = 24
Penyelesaian:
x = 24
Bukti:
x - 8 = 16
24 - 8 = 16
16 = 16 (benar)
4. 17 = p - 6
Tahapan :
17 = p - 6
17 + 6 = p - 6 + 6
23 = p
Penyelesaian:
p = 23
Bukti:
17 = p - 6
17 = 23 - 6
17 = 17 (benar)
5. 20 = 8x - 4
Tahapan :
20 = 8x - 4
20 + 4 = 8x -4 + 4
24 = 8x
24 : 8 = 8x : 8
3 = x
Penyelesaian:
x = 3
Bukti:
20 = 8x - 4
20 = 8x3 - 4
20 = 24 - 4
20 = 20 (benar)