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asambeis [7]
3 years ago
14

What is the value of x in the following system of equations? 11x + 12y = 13 14x + 15y = 16 A. x = −2 B. x = −1 C. x = 1 D. x = 2

Mathematics
1 answer:
Grace [21]3 years ago
5 0
11x + 12y = 13....multiply by 15
14x + 15y = 16...multiply by -12
---------------------
165x + 180y = 195 (result of multiplying by 15)
-168x - 180y = - 192 (result of multiplying by -12)
-------------------add
-3x = 3
x = -3/3
x = -1 <====
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8 0
2 years ago
Solve for b:<br><br> b² = 8b + 84
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4 0
3 years ago
Respuesta de (-0.5)²
Vladimir79 [104]

Answer:

0.25

Step-by-step explanation:

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so

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5 0
3 years ago
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