Question

[Vũ Trung Khang]

tìm số nguyên x

-2x-(x-17)=34-(-x+25)

17x-(16x-37)=2x+43

-2x-3(x+17)=34-2(-x+25)

17x+3(16x-37)=2x+43-14x

-2x+15<3x-7<19-x

25+24+23+.....+x+(x-2)+(x-3)

nhanh lên nha

Answer 1

[Monsmoke]

không ai làm nhỉ

Answer 2

[๖²⁴ʱんuﾘ ｲú❄✎﹏]

\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)

\(-2x-x+17=34+x-25\)

\(-2x-x-x=34-25-17\)

\(-4x=-8\Leftrightarrow x=2\)

\(17x-\left(16x-37\right)=2x+43\)

\(17x-16x+37=2x+43\)

\(17x-16x-2x=-37+43\)

\(-x=6\Leftrightarrow x=6\)

\(-2x-3\left(x+17\right)=34-2\left(-x+25\right)\)

\(-2x-3x-51=34+2x-50\)

\(-2x-3x-2x=34-50+51\)

\(-7x=35\Leftrightarrow x=-5\)