Question

hola me podrían ayudar a resolver esto porfavor?

5(x-3)=3(x+3)

4(x+2)=2(x-1)

3(x+5)=x+7

4(x-1)+5(x+1)=100

7(x+3)=45-3(12-x)

3x-6=15x+18​

Answer 1

Explicación paso a paso:

$5(x + 3) = 3(x + 3) \\ 5x + 15 = 3x + 9 \\ - 9 + 15 = 3x - 5x \\ 6 = - 2x \\ 2x = - 6 \\ x = \frac{ - 6}{2} = - 3$

$4(x + 2) = 2(x - 1) \\ 4x + 8 = 2x - 2 \\ 2 + 8 = 2x - 4x \\ 10 = - 2x \\ 2x = - 10 \\ x = \frac{ - 10}{2} = - 5$

$3(x + 5) = x + 7 \\ 3x + 15 = x + 7 \\ - 7 + 15 = x - 3x \\ 8 = - 2x \\ 2x = - 8 \\ x = \frac{ - 8}{2} = - 4$

$4(x + 1) + 5(x + 1) = 100 \\ 4x + 4 + 5x + 5 = 100 \\ 9x + 9 = 100 \\ 9x = 100 - 9 \\ 9x = 91 \\ x = \frac{91}{9}$

$7(x + 3) = 45 - 3(12 - x) \\ 7x + 21 = 45 - 36 + 3x \\ 7x + 21 = 9 + 3x \\ 7x - 3x = 9 - 21 \\ 4x = - 12 \\ x = \frac{ - 12}{4} = - 3$

espero te sirva