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3 years ago

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

Mathematics

1 answer:

yanalaym [24]3 years ago

6 0

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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