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Luda [366]
3 years ago
10

How do I do this answer please

Mathematics
2 answers:
Mashcka [7]3 years ago
5 0

Answer:

12.5

Step-by-step explanation:

(2.5 + 7.5?) /2 * 2.5 = 12.5

nydimaria [60]3 years ago
3 0
The answer should be 12.5
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What is the value of a in the equation 5a -10b = 45 when b = 3
leva [86]
Salutations!

5a-10b = 45

value of b = 3

Multiply 10 and 3

10*3=30

Now, you can solve the equation --

5a-30=45

separate the variables aside, and the numbers aside.

5a=45 +30

5a=75

a=75/5

a=15

Hope I helped (:

Have a great day!
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