markleal4022
15.07.2019 •
Mathematics
–2x + 3y = 21 3x – 2y = 21 –2x – 3y = 21 –2x + 3y = 7
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Ответ:
Ответ:
cross multiply
(1/3)(x) = (1/4)(1)
1/3x = 1/4 ...multiply both sides by 3, eliminating the 1/3 on the left side
x = 1/4 * 3
x = 3/4 <=== 3/4 cups of water are needed for 1 cup of milk