Mathematics
30.10.2020 19:30
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Which equation has the solution n = 11?
Which equation has the solution n = 11?
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winstonbendariovvygn
5,0(44 marks)
3n + 12 = 45
Step-by-step explanation:
*Process of elimination*
3n + 12 = 45
(given)
3n + 12 = 45
- 12 - 12
(subtraction property of equality)
3n = 33
÷ 3 ÷ 3
(division property of equality)
n = 11
7n - 8 = 62
(given)
7n - 8 = 62
+ 8 + 8
(addition property of equality)
7n = 70
÷ 7 ÷ 7
(division property of equality)
n = 10 ≠ 11
8n + 6 = 102
(given)
8n + 6 = 102
- 6 - 6
(subtraction property of equality)
8n = 96
÷8 ÷8
(division property of equality)
n = 12 ≠ 11
5n - 20 = 25
(given)
5n - 20 = 25
+ 20 + 20
(addition property of equality)
5n = 45
÷5 ÷5
(division property of equality)
n = 9 ≠ 11
astigall4272
4,9(61 marks)
it's 3n+12=45
Step-by-step explanation:
3n+12-12=45-12
3n=33
=11
wrolle
4,4(10 marks)
Where’s the diagram...?
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