Solve \$\∣ x − 7 \∣ = 8\$.

A) x = -1

B) x = 15, -1

C) x = 15

D) x = 15, 1

Find a if \$\∣ a + 2 \∣ = \∣ 2a + 1 \∣\$.

A) x = -1

B) x = 1, -1

C) x = 1

D) x = 6

Solve \$\∣ x + 3 \∣ = \∣ x + 9 \∣\$.

A) x = - 6

B) x = 6

C) x = -1

D) x = 1

Solve the equation containing absolute value: \$2/3|r + 6 | - 7 = 9\$.

A) r = -18 and r = -30

B) r = 81 and r = -30

C) r = -81 and r = - 30

D) r = 18 and r = - 30

Solve the equation and check the solutions if it’s satisfied or not: \$| x^2 - 4x - 5| = x + 1\$.

A) x = 6, x = - 1 and x = 4

B) x = -1, x = 4 and x = - 6

C) x = -1, x = - 4 and x = 6

D) x = - 6, x = - 4 and x = - 1