Question

Solve the following equations
solve for x -- 2x - 2 = 20
solve for a -- 5a + 2a + 1 = 50​

Answer 1

1. solve for x -- 2x - 2 = 20

• 2x - 2 = 20

Add 2 on both sides,

• 2x - 2 + 2 = 20 + 2
• 2x = 22

Divide both sides by 2,

• x = 11

2. solve for a -- 5a + 2a + 1 = 50

• 5a + 2a + 1 = 50

Add like terms,

• 7a + 1 = 50

Subtract 1 from both sides,

• 7a + 1 - 1 = 50 - 1
• 7a = 49

Divide both sides by 7,

• a = 7