Question

3x+7x−28+31−8x for x=2043

The simplified expression is-
The value is-
AND
123−2x−3x+7 for x=5
The simplified expression is-
The value is-

Answer 1

see below

Explanation:

3x + 7x − 28 + 31 − 8x

Simplified:

2x + 3

Value when x = 2043:

2x + 3

2(2043) + 3

4086 + 3

= 4089

123 − 2x − 3x + 7

Simplified:

-5x + 130

Value when x = 5:

-5x + 130

-5(5) + 130

-25 + 130

= 105