Question

Tìm x thuộc z biết:

10.(x-7)-8(x+5)=6.(-5)+24

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Answer 1

\(10\left(x-7\right)-8\left(x+5\right)=6.\left(-5\right)+24\)

\(\Leftrightarrow\)\(10x-70-8x-40=-6\)

\(\Leftrightarrow\)\(2x-110=-6\)

\(\Leftrightarrow\)\(2x=104\)

\(\Leftrightarrow\)\(x=52\)

Vậy...

Answer 2

10.(x-7)-8(x+5)=6.(-5)+24

=> 10.x - 10.7 - 8.x + 8.5 = -30 + 24

=> 10.x - 70 - 8.x + 40 = -6

=> (10.x - 8.x) - (70-40) = 6

=> 2.x - 30 = 6

=> 2.x = 6 + 30

=> 2.x = 36

=> x = 36 : 2

=> x = 18

Answer 3

<=> 10x-70-8x-40=-30+24

<=> 2x=70+40-30+24=104

=>x=52

Answer 4

Ta có\(10.\left(x-7\right)-8\left(x+5\right)=6.\left(-5\right)+24\Leftrightarrow10x-70-8x-40=-6\Leftrightarrow2x-110=-6\)

<=> x=57

Vậy x = 57

Answer 5

10.(x-7)-8(x+5)=6.(-5)+24
10.(x-7)-8(x+5)= (-6)
x-7+x5= -6.(-10)
2x     =  60
2x     =  60+(-8)
  x     =  52 
>>> x = 52 nhá