Question

An equation and the steps to solve it are shown below:

3x - (8x - 2) = 4

Step 1: 3x - 4x + 1 = 4
Step 2: x + 1 = 4
Step 3: x + 1 - 1 = 4 - 1
Step 4: x = 3

Which step was the error made and why?

Step 1, because incorrect signs have been used

Step 2, because the terms have been added incorrectly

Step 3, because numbers have been added to both sides of the equation

No error was made

Answer 1

@Dmb1215

Answer 2

could be 2

Answer 3

(8x-2) difficult

Answer 4

@musa19965 could be

Answer 5

but how do you subtract 8x-2 or you don't subtract

Answer 6

@Dmb1215 right? you do not subtract?

Answer 7

you multiply everything by the negative

Answer 8

oh so it would be 6x right?

Answer 9

ya...

Step 2, because the terms have been added incorrectly

is answer...

Answer 10

yep

Answer 11

Thx @chetan552 @Dmb1215 @musa19965 i wish i could put medal on all you guys :c

Answer 12

question closed :D