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Furkat [3]
3 years ago
10

Solve the systme of equations using elimination X+Y=2 X-Y=4

Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

Answer:

x=3

y=-1

Step-by-step explanation:

x=4+y

by substitution it in equation 1

weget

(4+y)+y=2

4+2y=2

y=-1

x=3

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3 years ago
Solve the logarithmic equation. write the answer in exact, simplified form. log(-c) + log8= log (7c-75)
Wewaii [24]

The value of c is 5 when we simplify the  logarithmic equation              log(-c) + log8= log (7c-75). This can be obtained using the properties of the logarithm.

<h3>What is the value of c ?</h3>

Given that,

log(-c) + log8 = log (7c-75)

log (-8c) = log (7c-75)  (∵ log a + log b = log ab)

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brainly.com/question/20835449

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