Question

x + 15 = 20 -4x
 

Giúp tui với

Answer 1

=x+4x=-15+20

5x=5

=>x=1

Answer 2

x + 15 = 20 - 4x

=> x + 4x = 20 - 15

=> 5x = 5

=> x = 1

Vậy ...

Answer 3

=> x + 4x  = 20  - 15

=> 5x  = 5

=> x= 1

hok tốt

Answer 4

\(x+15=20-4x\)

\(\Rightarrow x+4x=20-15\)

\(\Rightarrow5x=5\)

\(\Rightarrow x=1\)

Answer 5

\(x+15=20-4x\)

\(\Leftrightarrow x+4x=20-15\)

\(\Leftrightarrow5x=5\)

\(\Leftrightarrow x=1\)

KL : ... 

P/s : kb vs ri'ss ik nì 

Answer 6

x+15=20-4x

=>x+15-(20-4x)=0

=>5x-5=0=>x=1

Answer 7

x+4x=20-15

x-4x=5

x=5-4

x=1

Answer 8

=x+4x=-15+20

5x=5

x=1

Answer 9

\(x+15=20-4x\)

\(\Rightarrow x+4x=40-15\)

\(\Rightarrow5x=5\)

\(\Rightarrow x=1\)

Mong các em k

Answer 10

X= 1 nha 

Chuc hoc tot !