Karla is given the equation 10x + 15 = 20 to solve. She says the solution is 1/2 . Which reason justifies her solution? HELP THI

Question

Sauron [17]

3 years ago

12

Karla is given the equation 10x + 15 = 20 to solve. She says the solution is 1/2 . Which reason justifies her solution? HELP THI

S IS URGENT

Mathematics

2 answers:

siniylev [52] · Answer 1 · 2022-07-20T03:33:28+03:00

siniylev [52]3 years ago

5 0

10x + 15 = 20 so 10x = 20 <span>- 15 =5, and 10x=5 means x=5/10=1/2

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Goryan [66] · Answer 2 · 2022-07-20T05:12:19+03:00

Goryan [66]3 years ago

3 0

10 x + 15 = 20
10 x + 15 - 15 = 20 - 15
10 x = 5
x = 5 : 10
x = 1/2 ( the solution )
We can justify it:
10 * 1/2 + 15 = 20
5 + 15 = 20
20 = 20 ( correct )