Question

Solve for X for A and B

Answer 1

• A. x = 3
• B. x = 3

Explanation:

Question A

Using the proportions of similar triangles:

• (7x + 4 + 15)/(12 + 20) = 15/12
• (7x + 19)/32 = 5/4
• 7x + 19 = 40
• 7x = 21
• x = 3

Question B

• (6x - 3)/(6 + 4) = (6x - 3 - 6)/6
• 3(2x - 1)/10 = 3(2x - 3)/6
• 6(2x - 1) = 10(2x - 3)
• 3(2x - 1) = 5(2x - 3)
• 6x - 3 = 10x - 15
• 10x - 6x = 15 - 3
• 4x = 12
• x = 3