tokuichi3135
05.07.2019 •
Mathematics
Which of the following equations has infinitely many real solutions? a. 3(x - 7) = 3x + 21 b. 3x + 1 = 3x - 1 c. 3x + 1 = x - 1 d. 3(x - 7) = 3x - 21
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Ответ:
Answer is D. 3(x - 7) = 3x - 21
because
3(x - 7) = 3x - 21
Distributive property
3x - 21 = 3x - 21
0 = 0
Infinitely many real solutions
Ответ:
B
Step-by-step explanation: