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skrrtgod408
21.08.2019 •
Mathematics
Which expression is equivalent to this one?
–5(6 + 11)
a.
(–5) • 6 + 11
b.
(–5) + 6 + 11
c.
(–5) • 6 • 11
d.
(–5) • 6 + (–5) • 11
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Ответ:
A. (–5) • 6 + 11= -19
B. (–5) + 6 + 11= 12
C. (–5) • 6 • 11= -330
D. (–5) • 6 + (–5) • 11= -85
Ответ:
15
Step-by-step explanation:
GH = (BC + FE) /2
9x-3 = (19+ 5x+1) /2
2* (9x-3) = 19+ 5x+1
18 x - 6 = 5x + 20
13x = 26
x = 2
GH = 9*2 - 3 = 15