Question

tim so nguyen x bt

25 – 2x = 16 – 3x
d) x – (47 – 22) = 5+ (10 – 4x) ai giup mik vs

Answer 1

25 – 2x = 16 – 3x

-2x + 3x = 16 - 25

x = -9

Vậy x = -9

x - (47 - 22 ) = 5 + (10-4x)

x - 47 + 22    = 5 + 10 - 4x

x + 4x = 5 + 10 - 22 + 47

5x       = 40

x         = 40 : 5

x         = 8

Vậy x = 8.

~ HOK TỐT ~

Answer 2

\(\text{25 – 2x = 16 – 3x}\)

\(2x+3x=16-25\)

\(5x=-9\)

\(\Rightarrow x=\frac{-9}{5}\)

\(\text{d) x – (47 – 22) = 5+ (10 – 4x)}\)

\(x-47+22=5+10-4x\)

\(x+4x=5+10-22+47\)

\(5x=40\)

\(\Rightarrow x=8\)

học tốt

Answer 3

\(25-2x=16-3x\)

\(\Leftrightarrow25-2x-16=-3x\)

\(\Leftrightarrow-2x+9=-3x\)

\(\Leftrightarrow-3x+2x=9\)

\(\Leftrightarrow-x=9\Leftrightarrow x=9\)

Vậy ...

\(x-\left(47-22\right)=5+\left(10-4x\right)\)

\(\Leftrightarrow x-47+22=5+10-4x\)

\(\Leftrightarrow x-25=5+10-4x\)

\(\Leftrightarrow x-25=-4x+15\)

\(\Leftrightarrow x=-4x+15+25\)

\(\Leftrightarrow x=-4x+40\)

\(\Leftrightarrow x+4x=40\Leftrightarrow5x=40\Leftrightarrow x=8\)

Vậy ...

Answer 4

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Answer 5

a > = -9/5

 b> = 8

Answer 6

c) 25 – 2x = 16 – 3x

   -2x + 3x = 16 - 25

              x = - 9

Vậy x = -9

d) x – (47 – 22) = 5+ (10 – 4x)

               x - 25 = 15 - 4x

              x + 4x = 15 + 25

                    5x = 40

                      x = 40 : 5

                      x = 8

Vậy x=8