angeldawnfick
16.10.2019 •
Mathematics
Anne solved 5(2x) - 3 = 20x + 15 for x by first distributing 5 on the left side of the equation. she got the answer x = -3. when she substituted-3 into the original equation her answer was incorrect. explain anne's error, and find the correct answer.
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Ответ:
-9/5
Step-by-step explanation:
she should do the multiplying 5 and 2x first then do the calculation
10x - 3 = 20x +15
-3 - 15 = 20x - 10 x
-18 = 10x
x = -18/10➡ x = -9/5
Ответ:
13$
Step-by-step explanation: