Question

V Tìm x:

1/ -16 + 23 + x = - 16

2/ 2x – 35 = 15

 

Answer 1

1/

=>23+x=0

=>x=-23

2/

=>2x=50

=>x=25

Answer 2

1/ -16 + 23 + x = - 16

<=>-16+23+x+16=0

<=>23+x=0

<=>x=-23

Vậy x=-23

2/ 2x – 35 = 15

<=>2x=50

<=>x=25

Vậy x=25

Answer 3

1, -16+23+x=-16

x=-16+16-23

x=-23

2,2x-35=15

2x=35+15

2x=50

x=25

Answer 4

1/ -16 + 23 + x = -16

= > 23 + x = -16 + 16 = 0

= > x = 0 - 23 = -23

2/ 2x - 35 = 15

= > 2x = 35 + 15 = 50

= > x = 50 : 2 = 25

Answer 5

1/ \(-16+23+x=-16\)

\(\Leftrightarrow23+x=-16-\left(-16\right)\)

\(\Leftrightarrow23+x=0\)

\(\Leftrightarrow x=0-23\Leftrightarrow x=-23\)

Vậy \(x=-23\)

2/ \(2x-35=15\)

\(\Leftrightarrow2x=15+35\)

\(\Leftrightarrow2x=50\Leftrightarrow x=25\)

Vậy \(x=25\)

Answer 6

1/ -16 + 23 + x = - 16

    7 + x = - 16

          x = - 16 - 7

          x = - 23

Vậy x = - 23

2/ 2x – 35 = 15

    2x = 15 + 35

    2x = 50

      x = 50 : 2

      x = 25

Vậy x = 25

Answer 7

\(a,-16+23+x=-16\)

\(=>7+x=-1\)

\(=>x=-1-7=-8\)

\(b,2x-35=15\)

\(=>2x=15+35\)

\(=>x=\frac{50}{2}=25\)