Question 1

28 -4a = 3a -14+2a
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Question 2

24+14 = 3a + 4a +2a
38 = 9a
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Hope it is helpful.

Question 3

$\huge\text{Hey there!}$

$\huge\textsf{28 - 4a = 3a - 14 + 2a}$

$\huge\boxed{\rightarrow}\huge\textsf{ 28 - 4a = 5a - 14}$

$\huge\boxed{\rightarrow}}\huge\textsf{ -4a + 28 = 5a - 14}$

$\huge\text{SUBTRACT \underline{\underline{5a}} to BOTH SIDES}$

$\huge\textsf{-4a + 28 - 5a = 5a - 14 - 5a}$

$\huge\boxed{\rightarrow}\huge\textsf{ -9a + 28 = -14}$

$\huge\text{SUBTRACT \underline{\underline{28}} to BOTH SIDES}$

$\huge\textsf{-9a + 28 - 28 = -14 - 28}$

$\huge\boxed{\rightarrow}}\huge\textsf{ -9a = -42}$

$\huge\text{DIVIDE \underline{\underline{-9}} to BOTH SIDES}$

$\huge\boxed{\mathsf{(-9a)/(-9)=(-42)/(-9)}}$

$\huge\boxed{\rightarrow}\huge\boxed{\star\ \mathsf{\ a = (14)/(3)}\ \star}$

$\huge\boxed{\mathsf{Therefore, your \ answer\ is: a = \bf (14)/(3) }}\huge\checkmark$

$\huge\text{Good luck on your assignment \& enjoy your day!}$

~
$\huge\boxed{\frak{Amphitrite1040:)}}$

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