Solve. 1) |x|=7

Holzkeulecz

Holzkeulecz

Answered question

2022-08-03

Solve
1. | x | = 7
2. | x | + 4 = 6
3. | m 5 | = 4
4. | m + 9 | = 3

Answer & Explanation

quillassed7

quillassed7

Beginner2022-08-04Added 13 answers

Step 1
1) | x | = 7
we know | x | = + x ( o r ) x
so, if | x | = + x
then x = 7
if | x | = x
x = 7
x = 7
2) | x | + 4 = 6
if | x | = + x
x + 4 = 6
x = 6 4
x = 2
if | x | = x
x + 4 = 6
x = 6 4
x = 2
x = 2
Step 2
| m 5 | = 4
if | m 5 | = ( m 5 )
then ( m 5 ) = 4
m = 5 + 4
m = 9
if | m 5 | = ( m 5 )
( m 5 ) = 4
m 5 = 4
m = 4 + 5
m = 1
4) | m + 9 | = 3
if | m + 9 | = ( m + 9 )
then ( m + 9 ) = 3
m + 9 = 3
m = 3 9
m = 6
if | m + 9 | = + ( m + 9 )
m + 9 = 3
m = 3 9
m = 12

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