mandilynn22
17.12.2021 •
Mathematics
1. Solve the following system of equations by elimination. What is the value of x?
3x - 4y -5
-3x - 4y = -11
A. x = 2
B. x = -1
C. x = 1
D. x = -2
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Ответ:
x = 1 (Option C)
Step-by-step explanation:
3x - 4y = -5 (1)
-3x - 4y = -11 (2)
On adding
3x - 4y - 3x - 4y = -11 + 5
6x = 6
x = 6/6
x = 1
Ответ:
60*20=$1200