What is the answer to 3.9x-0.7=8.66 ?

The answer to 3.9x-0.7=8.66 is x= 12/5

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3.9x-0.7=8.66

3.9 x - 0.7 = 8.66

x = \frac{12}{5}

Decimal Notation

x = 2.4

Solution steps

3.9 x - 0.7 = 8.66

Multiply both sides by

100

390 x - 70 = 866

Move

70

to the right side

390 x = 936

Divide both sides by

390

x = \frac{12}{5}

x, 2 x + 4 y = - 1

3 (x + 7) - 2 (x + 4) = 8 (x + 10) - 7 (- x - 3)

5 x - 8 = - 2 x + 13

\frac{3}{4} = \frac{2}{3} c + \frac{3}{5}

- 24 + 4 b = 36 - 8 b