Question

x-43=(35-x)-48 

Answer 1

=>x-43=-x-13

=>2x=30

=>x=15

Answer 2

x-43=(35-x)-48 

x-43=35-x-48

x+x=35-48+43

2x=30

x=30:2

x=15

Answer 3

\(x-43=\left(35-x\right)-48\)
\(\Rightarrow x-43=35-x-48\)
\(\Rightarrow x+x-43-35=-48\)
\(\Rightarrow2x-68=-48\)
\(\Rightarrow2x=30\)
\(\Rightarrow x=15\)
Vậy \(x=15\)

Answer 4

x-43=(35-x)-48 

x-43=35-x-48

x+x=35-48+43

2x=30

x=30:2

x=15