Question

X+5 4x -------- = -------- 3 7

Answer 1

Здравствуйте!

Ответ:

x=7

Объяснение:

$\frac{x + 5}{3} = \frac{4x}{7} | \times 21 \\ \\ \frac{21(x + 5)}{3} = \frac{21 \times 4x}{7} \\ \\ 7(x + 5) = 3 \times 4x \\ \\ 7x + 35 = 12x \\ \\ 35 = 12x - 7x \\ \\ 5x = 35 \\ \\ x = 7$

Answer 2

To solve this equation, we need to get rid of the fractions first. We can do this by multiplying both sides of the equation by the least common multiple (LCM) of the denominators, which is 21:

21(x + 5) = 12(4x/3) + 3(7/4)

Simplifying this equation, we get:

21x + 105 = 16x + 15.75

Now, we can solve for x by bringing all the x terms to one side and all the constant terms to the other side:

21x - 16x = 15.75 - 105

5x = -89.25

x = -17.85

Therefore, the solution to the equation is x = -17.85.