MATH SOLVE

4 months ago

Q:
# What belongs in the box marked with the question mark in the proof?Given: 3x - 4 = 2(x + 8), Prove: x = 20StatementReason(1) 3x - 4 = 2(x + 8)(2) 3x - 4 = 2x + 16(3) 3x = 2x + 20 (?)(4) x = 20

Accepted Solution

A:

(1) 3x - 4 = 2(x + 8) ..............Given

(2) 3x - 4 = 2x + 16...............Distributive property

(3) 3x = 2x + 20-----------------Addition property of equality

(4) x = 20-------------------------Subtraction property of equality

(2) 3x - 4 = 2x + 16...............Distributive property

(3) 3x = 2x + 20-----------------Addition property of equality

(4) x = 20-------------------------Subtraction property of equality