6

Set 8: Linear Equations (Intermediate)

Explanation

Answer: B

Solve for xx: 5(x3)=205(x - 3) = 20

A.

4

B.

7

✓ Correct
C.

23

D.

1

Detailed Explanation

Choice B is correct. Choice Ahoice C is the correct answer. 1. Start with the equation: 5(x3)=205(x - 3) = 20 2. Divide both sides by 5: x3=4x - 3 = 4 3. Add 3 to both sides: x=7x = 7 4. Verify: 5(73)=5(4)=205(7 - 3) = 5(4) = 20 ✓ Choice Ahoice D is incorrect because this results from subtracting 3 from 4: 11. Wrong inverse operation. Choice Ahoice C is incorrect because this is the value of x3x-3. Choice Ahoice B is incorrect because this results from adding 3 to 20: 2323.

Key Steps:

The correct answer is 7

Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.

🎯 Keep Practicing!

Master all sections for your best SAT score