Tìm \(\Large x\): a) \(\Large{x \times 4,2 = 216,72}\) b) \(\Large{x :

Tìm \(\Large x\):

a) \(\Large{x \times 4,2 = 216,72}\)

b) \(\Large{x : 8,5 = 47,05 - 29,75}\)

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

a) \(\Large{x \times 4,2 = 216,72}\)

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

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

b) \(\Large{x : 8,5 = 47,05 - 29,75}\)

 \(\Large{x : 8,5 = 17,3}\)

 \(\Large{x = 17,3 \times 8,5}\)

 \(\Large{x = 147,05}\)