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17 votes
What value of x makes the

equation true? Write your
answer in the box below,

-1/4x-12=x+3

2 Answers

7 votes
Answer: x = -18.75

-1/4x - 12 = x + 3

Add 12x from both sides to get
-1/4x = x + 15

Then minus x from both sides
-5/4x = 15

The divide by -5/4 to get
x = -18.75
User Izana
by
3.6k points
6 votes

Answer:


x = -12

Explanation:

Step 1: Add 1/4x to both sides


-(1)/(4)x - 12 = x + 3


-12 - (1)/(4)x + (1)/(4)x = x + 3 + (1)/(4)x


-12 = (5)/(4)x + 3

Step 2: Subtract 3 from both sides


-12 - 3 = (5)/(4)x + 3 - 3


-15 = (5)/(4)x

Step 3: Multiply both sides by 4/5


-15*(4)/(5)=(5)/(4)x * (4)/(5)


-12 = x

Answer:
x = -12

User Geoff Rich
by
3.4k points