Tus kheej thiab cov kab lus zoo ib yam

Hauv kev tshaj tawm no, peb yuav txiav txim siab seb tus kheej thiab cov kab lus dab tsi zoo ib yam, sau cov hom, thiab kuj muab piv txwv rau kev nkag siab zoo dua.

Cov ntsiab lus ntawm Kev Qhia Txog Tus Kheej thiab Kev Qhia Txog Tus Kheej

Yog leejtwg yog ib qho kev sib npaug ntawm lej uas nws qhov sib npaug sib npaug.

Ob txoj kev ua lej sib npaug sib npaug (nyob rau hauv lwm yam lus, yog zoo tib yam) yog hais tias lawv muaj tus nqi tib yam.

Hom kev qhia tus kheej:

1. Tooj Ob sab ntawm qhov sib npaug tsuas yog cov lej xwb. Piv txwv li:
   • 6 + 11 = 9 + 8
   • 25 ⋅ (2 + 4) = 150
2. Sau - tus kheej, uas kuj muaj cov tsiaj ntawv (variables); muaj tseeb rau txhua yam uas lawv coj. Piv txwv li:
   • 12 x + 17 = 15 x - 3x + 16 + 1
   • 5 ⋅ (6x + 8) = 30 x + 40 po

Piv txwv ntawm qhov teeb meem

Txiav txim seb qhov twg ntawm qhov sib npaug hauv qab no yog cov cim:

• 212 x + x = 2 x – x + 199 + 13
• 16 ⋅ (x + 4) = 16 x + 60 po
• 10 - x + 22 = 10 x + 22 po
• 1 – (x – 7) = -x - 6
• x² 2 x = 2 x³
• 15 - 3² = 15² + 2 ⋅ 15 ⋅ 3 – 3²

teb:

Cov cim yog qhov sib npaug ntawm thawj thiab thib plaub, vim tias muaj txiaj ntsig x ob qho tib si ntawm lawv yuav ib txwm coj cov txiaj ntsig zoo ib yam.