Question

[nguyen quynh trang]

1,tìm x

a,305-x+14=48+(x-23)

b,-(35-x)-(37-x)=33-x

Answer 1

[Nguyễn Hồng Yến]

a, 305-x+14=48+x-23

<=> 319-x=25+x

<=>x=-147

b, -35+x-37+x=33-x

<=> -72+2x=33-x

<=> 2x+x=33+72

<=> 3x=105 <=> x=35