Ta có : \(14-\left(25-x\right)+\left(-14+50\right).14-\left(25-x\right)+\left(-14+50\right)\)
\(=14-25+x+36.14-25+x-14+50\)
\(=2x+36.14=2x+504\)
14−(25−x)+(−14+50).14−(25−x)+(−14+50)14−(25−x)+(−14+50).14−(25−x)+(−14+50)
=14−25+x+36.14−25+x−14+50=14−25+x+36.14−25+x−14+50
=2x+36.14=2x+504
Hok tốt!
Giải:
\(14-\left(25-x\right)+\left(-14+50\right).14-\left(25-x\right)+\left(-14+50\right)\)
\(=14-25+x+\left(-14.14+50.14\right)-25+x-14+50\)
\(=\left(14-14\right)+\left(-25-25+50\right)+\left(x+x\right)+\left(-196+700\right)\)
\(=0+0+2x+504\)
\(=2x+504\)
Chúc bạn học tốt!
