Question

6. Solve for a: 3a – 5(a - 2) = 34
1. a = 1
2. a = -12
3. a = -22
4. a = 0​

Answer 1

a = -12

Explanation:

3a – 5(a - 2) = 34

→ Expand out the brackets – 5(a - 2)

– 5(a - 2) = – 5(a + 2) = -5a + 10

→ Substitute that back into the equation

3a - 5a + 10 = 34

→ Simplify the 'a's

-2a + 10 = 34

→ Minus 10 from both sides to isolate -2a

-2a = 24

→ Divide both sides by -2 to isolate a

a = -12