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Oduvanchick [21]
3 years ago
5

Given the equation 5+x-12=x-7:

Mathematics
1 answer:
yanalaym [24]3 years ago
6 0
<h2>(-∞,∞) </h2>

Step-by-step explanation:

PART A:

given 5+x-12=x-7

5+x-12=x-7\\x-7=x-7\\x=x\\

This is true for all values of x.

So,x∈(-∞,+∞)

PART B:

When x=4,left hand side=5+4-12=-3

right hand side=4-7=-3

so,left hand side =right hand side

When x=0,left hand side=5+0-12=-7

right hand side=0-7=-7

so,left hand side =right hand side

When x=5,left hand side=5+5-12=-2

right hand side=5-7=-2

so,left hand side =right hand side

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