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Popular >

-3x+9=7x-21

Solution

- 3 x + 9 = 7 x - 21

Solution

x = 3

Solution steps

- 3 x + 9 = 7 x - 21

Move

9

to the right side

- 3 x = 7 x - 30

Move

7 x

to the left side

- 10 x = - 30

Divide both sides by

- 10

x = 3

Popular Examples

solvefor y,3y=x^3+3x^2-9x+3 solve for

y, 3 y = x^{3} + 3 x^{2} - 9 x + 3

42 = 7 a

- 6 x = 1

3 (2 x - 5) + x = 6

x + 5 = x - 1

Frequently Asked Questions (FAQ)

What is the answer to -3x+9=7x-21 ?
The answer to -3x+9=7x-21 is x=3
Solve for x: -3x+9=7x-21
The solution is x=3