aweid3085
02.09.2021 •
Mathematics
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12. Translate "Two-fifteenths of the difference of 4w and 3y plus
half of z" into an algebraic expression.
olitur: 4/5 - 2x) < 2x - 5.
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Ответ:
a) (4 , - 1/4)
Step-by-step explanation:
1/4 x + 1 1/2 y = 5/8 (1)
3/4 x - 1 1/2 y = 3 3/8 (2)
(1) + (2) 1/4 x + 3/4 x = 5/8 + 3 3/8
x = 4
1/4 * 4 + 3/2 y = 5/8
3/2 y = -3/8
y = - 1/4