What is the answer to 40*15=x*30 ?

The answer to 40*15=x*30 is x=20

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4015=x30

40 \cdot 15 = x \cdot 30

x = 20

Solution steps

40 \cdot 15 = x \cdot 30

Switch sides

x \cdot 30 = 40 \cdot 15

Multiply the numbers:

40 \cdot 15 = 600

x \cdot 30 = 600

Divide both sides by

30

x = 20

(5 t - 1) \cdot (5 t + 1) - 21 t^{2} + 15 = (2 t - 3)^{2} + 5 t

\frac{x - 2}{2} + \frac{x - 4}{2} = 1

(x - 7) (8 x - 4) = (4 x - 5) (2 x + 7)

x, 3 x - 5 y = - 2

24 - 5 w = 9