Question

X+187/11=21. 27/x+405/9= 48

Answer 1

Х+187=11*21
×=231-187
х=44

Answer 2

21*11=231-187=44
x=44
48*9=432-405=27*27=729
x=729

надеюсь правильно

Answer 3

It seems like you have provided two equations with two variables, x and y. Let's solve them step by step.

Equation 1: $x + \frac{187}{11} = 21$

First, let's isolate $x$ by subtracting $\frac{187}{11}$ from both sides:

$x = 21 - \frac{187}{11}$

Now, let's find a common denominator for subtraction:

$x = \frac{231 - 187}{11}$

$x = \frac{44}{11}$

$x = 4$

Equation 2: $\frac{27}{x} + \frac{405}{9} = 48$

First, simplify $\frac{405}{9}$:

$\frac{405}{9} = \frac{45 \cdot 9}{9} = 45$

Now, subtract $\frac{405}{9}$ from both sides:

$\frac{27}{x} = 48 - 45$

$\frac{27}{x} = 3$

Now, isolate $x$ by taking the reciprocal of both sides:

$x = \frac{27}{3}$

$x = 9$

So, the solutions for the system of equations are $x = 4$ and $x = 9$. However, since the second equation involves $x$ in the denominator, it's possible that $x = 9$ might result in a division by zero. Please double-check the equations and their context to ensure accuracy.