1. Solve the following system of equations by elimination. What is the value of x?
2 answers:
Answer:
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
Elimination method is a method of eliminating one of the variables from the two equations whose remaining variables will be simplified..
3x - 4y= -5 (×1) 3x - 4y= -5
-3x - 4y= -11 (×1) <u>-3x</u><u> </u><u>-</u><u> </u><u>4y</u><u> </u><u>=</u><u> </u><u>-11</u><u> </u><u>(</u><u>-</u><u>)</u>
6x = 6
6x/6 = 6/6
x = 1
the value of x is <em><u>1</u></em>
Answer: Option [C]
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