Question

5. Determina el valor de x. al X+(-7) = (-8)
b) x = 15+(-3)
c)X + 4 = (-12) - 1 + (-16)
d) x-6-3) + 4) = 17 - 8 + 9
e) 16 + x = 14 -(-9)​

Answer 1

Respuesta:

a) x=-1

b) x=12

c) x=-33

d) x=23

e) x=7

Explicación paso a paso:

$\begin{array}{rcl}x+(-7)&=&(-8)\\x&=&-8+7\\x&=&-1\end{array}$

$\begin{array}{rcl}x&=&15+(-3)\\x&=&12\end{array}$

$\begin{array}{rcl}x+4&=&(-12)-1+(-16)\\x+4&=&-29\\x&=&-29-4\\x&=&-33\end{array}$

$\begin{array}{rcl}(x-6-3)+4&=&17-8+9\\x-9+4&=&18\\x-5&=&18\\x&=&18+5\\x&=&23\end{array}$

$\begin{array}{rcl}16+x&=&14-(-9)\\16+x&=&14+9\\16+x&=&23\\ x&=&23-16\\ x&=&7\end{array}$