Question

15.x<750

3(x-12)=36

(x+251)-301=56

152+(x+231):2=358

Answer 1

\(15.x< 750\)

\(x=750:15\)

\(x=50\)

Vậy x bằng các số nhỏ hơn 50.

\(3.\left(x-12\right)=36\)

\(x-12=36:3\)

\(x-12=12\)

\(x=12+12\)

\(x=24\)

\(\left(x+251\right)-301=56\)

\(x-251=56+301\)

\(x-251=357\)

\(x=357+251\)

\(x=608\)

\(152+\left(x+231\right):2=358\)

\(\left(x+231\right):2=358-152\)

\(\left(x+231\right):2=206\)

\(x+231=206.2\)

\(x+231=412\)

\(x=412-231\)

\(x=181\)

k nhé mình nhanh

Answer 2

152+(x+231):2=358

=>152+(x+231)=358x2

=>152+(x+231)=726

=> x+231=726-152

=>x+231=564

=>x=564-231

=>x=333

tíc mình nha