Question

What is the value of x? 3/4x + 5 − 1/2x = 3

A. −8
B. −1/2
C. 1/2
D. 8

Answer 1

A= -8 is the answer because you subtract five from both sides the subtract 3/4 and 1/2 to get 1/4. The divide -2 by 1/4 to get the answer x= -8

Answer 2

`(3)/(4)x+5-(1)/(2)x=3\qquad|\text{multiply both sides by 4}\\\\\\ot4^1\cdot(3)/(\\ot4_1)x+4\cdot5-\\ot4^2\cdot(1)/(\\ot2_1)x=4\cdot3\\\\3x+20-2x=12\\\\(3x-2x)+20=12\qquad|\text{subtract 20 from both sides}\\\\x=-8`

Answer: A. -8