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natka813 [3]
3 years ago
9

Splve for a. help me please

Mathematics
1 answer:
Papessa [141]3 years ago
8 0

2a+7=180-109

2a+7=71

    -7=71-7

2a=64

a/2=64/2

a=32

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15 points work out ratio for x
BlackZzzverrR [31]

Answer:

x = 25

Step-by-step explanation:

x : (x+10) = 5:7

Fractional form

x / x+10 = 5/7

Cross multiply:

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7x = 5x + 50

7x - 5x = 5x + 50 - 5x

2x = 50

x = 25

Check:

25 : 25 + 10

25 : 35

25/35 = 5/7

If my answer is incorrect, pls correct me!

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15/35 in simplest form
Aleksandr-060686 [28]
Find the GCF of 15 and 35
15=3*5
35=7*5
The Greatest Common Factor here is 5
Divide both the numerator and denominator by this value to get the simplest form.
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35/5=7
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5 0
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