If Log(30x-90/5+x)
= 1. Find x.
Solution
Log(30x-90/5+x)
= 1.
Log10(30x-90/5+x)
= 1.
30x-90 = 101. After changing
into exponential form
5+x
30x-90 = 10 since
[101=10]
5+x
30x-90 = 10(5+x) after cross multiply
30x-90 = 50+10x
30x-10x = 50+90
[collecting like terms]
20x = 140
x=7 [after dividing by 20 both sides]
Hence x=7.
TRY THIS……………
If Log(30x-50/5+x)
= 1. Find x.
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