Question

tìm số nguyên x

( x+ 5)+(x-9)=x+2

( 27 -x) +( 15+x )=x-24

 giúp tui nhanh với  tui tck cho

Answer 1

a)( x+ 5)+(x-9)=x+2

x + 5 + x - 9 = x + 2

x + x - x = 2 -5 +9

x = 6

b)( 27 -x) +( 15+x )=x-24

-x + x - x = -24 -27 -15

-x = -66

x=66

hok tốt!

Answer 2

\(a.\left(x+5\right)+\left(x-9\right)=\)\(x+2\)

\(\Rightarrow x+x-x=2+9-5\)

\(\Rightarrow x=6\)

\(b.\left(27-x\right)+\left(15+x\right)=x-24\)

\(\Rightarrow x-x-x=-24-27-15\)

\(\Rightarrow-x=-66\)

\(\Rightarrow x=66\)

Answer 3

(x+5)+(x-9)=x+2

<=> x+5+x-9=x+2

<=> x+5+x-9-x-2=0

<=> x-6=0

<=> x=6

Vậy x=6

(27-x)+(15+x)=x-24

<=> 27-x+15+x=x-24

<=> 27-x+15+x-x+24=0

<=>66-x=0

<=> x=66

Vậy x=66