Tìm x: a) \(\Large{x\times2,5-3,46=4,68}\) b) \(\Large{x:1,2+2,15=7,28

Tìm x:

a) \(\Large{x\times2,5-3,46=4,68}\)

b) \(\Large{x:1,2+2,15=7,28}\)

• A. a) Đáp án: 3,256
• B. b) Đáp án: 6,156

a) \(\Large{x\times2,5-3,46=4,68}\)

 \(\Large{x\times2,5=4,68+3,46}\)

 \(\Large{x\times2,5=8,14}\)

 \(\Large{x=8,14:2,5}\)

\(\Large{x=3,256}\)

b) \(\Large{x:1,2+2,15=7,28}\)

\(\Large{x:1,2=7,28-2,15}\)

\(\Large{x:1,2=5,13}\)

\(\Large{x=5,13\times1,2}\)

\(\Large{x=6,156}\)