Tìm \(\Large x\): a) \(\Large 750 - x\times5=540\) b) \(\Large x+ 175

Tìm \(\Large x\):

a) \(\Large 750 - x\times5=540\)

b) \(\Large x+ 175 +x =225\)

• A. a) x = 42
• B. b) x = 25

Hướng dẫn:

a) \(\Large 750 - x\times5 = 540 \)

    \(\Large x = (750 - 540):5\)

    \(\Large x = 42\)

Vậy \(\Large x\) = 42.

b) \(\Large x + 175+x=225\)

   \(\Large x\times2=225-175\)

   \(\Large x = 50 :2\)

   \(\Large x=25\)

Vậy \(\Large x = 25\).