Tìm x: a) \(\Large{x\times4,2=216,72}\) b) \(\Large{x:8,5=47,05-29,75}

Tìm x:

a) \(\Large{x\times4,2=216,72}\)

b) \(\Large{x:8,5=47,05-29,75}\)

• A. a) Đáp án: 51,6
• B. b) Đáp án: 147,05

a) \(\Large{x\times4,2=216,72}\)

\(\Large{x=216,72 :4,2}\)

\(\Large{x=51,6}\)

b) \(\Large{x:8,5=47,05-29,75}\)

 \(\Large{x:8,5=17,3}\)

 \(\Large{x=17,3\times8,5}\)

 \(\Large{x=147,05}\)