15×(y-0,2)+17,8=38,8 x=?

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вопрос

To solve for x, we first need to isolate y in the equation.

15*(y-0.2)+17.8=38.8
15y - 3 + 17.8 = 38.8
15y + 14.8 = 38.8
15y = 24
y = 24/15
y = 1.6

Now that we have found the value of y, we can substitute it back into the original equation to solve for x:

15(1.6-0.2)+17.8=38.8
15(1.4)+17.8=38.8
21 + 17.8 = 38.8
38.8 = 38.8

Therefore, the solution is x=21.