Question

Simplify the following expressions and find the value when x = -2. 3(2x + 1) + 5x-2 -21​

Answer 1

Answer:

3(2x+1) + 5x-2-21 ,where x=-2

Step-by-step explanation:

so we will put the value of x in the equation

here we go,

3(2)(-2) +1+5(-2)-21

= -12+1+(-10)-21

=-11-10-21

=-11-31

= -42

Answer 2

3(2x + 1) + 5x - 2 - 21
= 6x + 3 + 5x - 2 - 21

When x = - 2

= 6(-2) + 3 + 5(-2) - 2 - 21
= -12 + 3 - 10 - 2 - 21
= 3 - 45
= - 42

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