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Solve for x.

5x = 4 +x

2/3x = 1/2

3x - 2x + 4 = 15/3

4x + 7 = 2x + 17

.5x = 10

User Thordax
by
6.0k points

2 Answers

4 votes
1. x=1
5x=4+x
4x=4
x=1

2. x=3/4 or 0.75
2/3x=1/2
2x=1 1/2
x=3/4

3. x=1
3x-2x+4=15/3
x+4=15/3
x=1

4. x=5
4x+7=2x+17
2x+7=17
2x=10
x=5

5. x=20
.5x=10
x=20
User Jakehurst
by
7.2k points
4 votes
1. 5(x) - [4 + x] = ?
4(x - 1)
4 = ?
x - 1 = ?
Now let's add ( + ) to your sides
Answer: x = 1

2.
(2)/(3) (x) - (1)/(2) = ?

(1)/(2)

(2)/(3) (x) - (1)/(2) = ?

(2)/(3)
L denominator = 3
R denominator = 2
Put them together it would be 6

(4(x) - 3)/(6 ) = ?
4(x) - 3 = ?
Let's add 3 from your sides
Repeat the process but let's divide by 4
4(x) = 3
Answer x =
(3)/(4)

3. 3(x) - 2(x) + 4 -
(15)/(3) = ?

(5)/(1)
x + 4 - 5 = ?
x - 1 = 0
Now, let add the number 1 from each sides
Answer: x = 1

4. 4(x) + 7 - 2(x) + 17 = ?
2(x - 5)
2 = ?
x - 5 = 0
Replace the subtraction symbol and make it a addition symbol ( but by 5)
Answer: x = 5

5. .5(x) - 10 = ?

(1)/(2)

(1)/(2) (x) - 10 = ?

(10(2) )/(2)

(x - 20)/(2)
x - 20 = 0
Add the number 20 to each of your sides after replacing the subtraction symbol to a addition symbol
Answer: x = 20

User Markthekoala
by
6.9k points
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