Question

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Answer 1

A)n=25-7
n=18
b)n=47+23
n=70
c)n=84÷3
n=28
d)n=2×31
n=62
e)4n=23-3
4n=20
n=20÷4
n=5
f)8n=111+9
8n=120
n=120÷8
n=15
g)3n=83-23
3n=60
n=60÷3
n=20
h)(n+1)=254:127
(n+1)=2
n=2-1
n=1
i)(4n-5)=9×11
(4n-5)=99
4n=99+5
4n=104
n=104÷4
n=26
J)(n-5)=35:7
(n-5)=5
n=5+5
n=10
k)(n-3)=90÷9
(n-3)=9
n=9+3
n=12
l)6×(n-2)=20-8
6×(n-2)=12
(n-2)=12÷6
(n-2)=2
n=2+2
n=4