Question 1

Solve.
5(a – 1) – 15 = 3(a + 2) + 4
Enter your answer in the box.
X
a = 15

Question 2

5 (a - 1) - 15 = 3 (a + 2) + 4

$\sf \dashrightarrow \: 5 (a - 1) - 15 = 3 (a + 2) + 4$

$\sf \dashrightarrow \: 5 * a - 5 * 1 - 15 = 3 * a + 3 * 2 + 4$

$\sf \dashrightarrow \: 5 a - 5 - 15 = 3 a + 6 + 4$

$\sf\dashrightarrow \: 5 a - 20 = 3 a + 10$

$\sf\dashrightarrow \: 5 a - 20 - 3a - 10 = 0$

$\sf\dashrightarrow \: 2 a - 30 = 0$

$\sf\dashrightarrow \: 2 a = 30$

$\sf\dashrightarrow \: a = \cancel(30)/(2)$

$\sf\dashrightarrow \: a = 15$

$\Large \underline{\boxed{\tt{a = 15 }}}$

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