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emmasim [6.3K]
3 years ago
11

How do you solve 39= 1 3/10b

Mathematics
2 answers:
stich3 [128]3 years ago
8 0
1 3/10·b=39
(1·10+3)·b/10=39
13b/10=39
13b=39·10
13b=390|:13
<u>b=30</u>

<em>Answer: 30</em>
alina1380 [7]3 years ago
4 0
39= 13/10 * b
39= 1.3 *b ( 13 divided by 10= 1.3)
39/ 1.3= b (39 divided by 1.3)
30=b
Answer is 30
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So unfortunate, calculators haven't been invented yet :/

But let me save you from the trouble mate-

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It is D, 1/4, 
Because
x+4=5-3x
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