Question

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ANSWER QUESTION C​

Answer 1

`\boxed{12}`

Explanation:

E is 5 more than d

f is 7 less than d

a) e = d + 5

b) f = d - 7

c) plug the values of e and f

`= d + 5 - (d - 7)`

When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression

`= d + 5 - d + 7`

Since, two opposites add up to zero , remove them from the expression

`= 5 + 7`

Add the numbers

`= 12`

Hope I helped!

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