Question

Giar giùm mik nhanh lên nha,rồi mik tik cho

a,70-5.(x-3)=45

b,10+2x=4⁵ : 4³

Answer 1

a) 70-5(x-3) = 45

5(x-3) = 70 - 45

5(x-3) = 25

x-3 = 25 : 5

x-3 = 5

x = 5 + 3

x = 8

b) 10+2x = 4⁵ : 4³

10+2x = 4²

10+2x = 16

2x = 16 - 10

2x = 6

x = 6 : 2 

x = 3

Answer 2

Hot boy!~~

a) 70-5.(x-3)=45

=> 5.(x-3)=70-45

=>5.(x-3)=25

=>x-3=25:5

=>x-3=5

=>x=8

b) \(10+2x=4^5:4^3\)

\(\Rightarrow10+2x=16\)

\(\Rightarrow2x=16-10\)

\(\Rightarrow2x=6\)

\(\Rightarrow x=3\)

Answer 3

a.\(\Leftrightarrow5\left(x-3\right)=70-45\Leftrightarrow5x-15=25\Leftrightarrow5x=40\Leftrightarrow x=8\)

b.\(10+2x=4^{5-3}\Leftrightarrow2x+10=4^2\Leftrightarrow2x=16-10\Leftrightarrow2x=6\Leftrightarrow x=3\)

Answer 4

70 - 5. ( x - 3 ) = 45

5. ( x - 3 ) = 70 - 45

5. ( x - 3 ) = 25

( x - 3 ) = 5

x = 5 + 3 

x = 8

b, 10 + 2x  = 4⁵ ÷ 4³

10 + 2x = 8

2x = 8 - 10

2x = -2

x = -2 ÷ 2

x = -1

Answer 5

a, 70 - 5.(x - 3) = 45 

   5.(x - 3) = 70 - 45 

   5.(x - 3) =  25 

   x - 3 = 25 : 5 

   x - 3 = 5 

  x = 5 + 3 

  x = 8 

b, 10 + 2x = 4⁵ : 4³ 

10 + 2x = 4^5-3 

10 + 2x = 4² = 16 

=> 10 + 2x = 16 

2x = 16 - 10 

2x = 6

x = 6 : 2

x = 3  

2x = 

Answer 6

a, 70 - 5.(x - 3) = 45

5.(x - 3) = 70 - 45

5.(x - 3) = 25

x - 3 = 25 : 5

x - 3 = 5

x = 5 + 3

x = 8

b, 10 + 2x = 4⁵ : 4³

 10 + 2x = 16

2x = 16 - 10

2x = 6 x = 6 : 2

x = 3

Answer 7

70 - 5 . ( x - 3 ) = 45

5. ( x - 3 ) = 70 - 45

5. ( x - 3 ) = 25

x - 3 = 25 : 5

x - 3 = 5

x = 5 + 3

x = 8