N + =15
(N +6) + ( -6 ) =15 + (-6)
N = 9
3n = 9
3n = 9
3 3
N=3
3n + 2= 14
(3n +2 ) + ( -2 ) =14 + (-2)
n=4
4n - 2 =18
(4n-2) + 2 =18 +2
n=5
n=2 .6
n=12
(3n+3.4) 6 = 15
(3n+12)-6=15
N =3
Showing posts with label maths 2021. Show all posts
Showing posts with label maths 2021. Show all posts
Wednesday, 25 August 2021
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