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Popular >

(15x+21)3=5x+7

Solution

(15 x + 21) 3 = 5 x + 7

Solution

x = - \frac{7}{5}

+1

Decimal Notation

x = - 1.4

Solution steps

(15 x + 21) \cdot 3 = 5 x + 7

Expand

(15 x + 21) \cdot 3 : 45 x + 63

45 x + 63 = 5 x + 7

Move

63

to the right side

45 x = 5 x - 56

Move

5 x

to the left side

40 x = - 56

Divide both sides by

40

x = - \frac{7}{5}

Popular Examples

10 (- 5 + y) - 3 = 17

4 (k - 2) = 2 (k - 9)

4 (x + 5) = 28

- 4 b - 5 = 3 b + 9

solvefor y,-3+3y=1 solve for

y, - 3 + 3 y = 1

Frequently Asked Questions (FAQ)

What is the answer to (15x+21)3=5x+7 ?
The answer to (15x+21)3=5x+7 is x=-7/5
Solve for x: (15x+21)3=5x+7
The solution is x=-7/5