1. \(-16+23+x=-16\)
\(23+x=-16+\left(-16\right)\)
\(23+x=0\)
\(x=0-23\)
\(x=-23\)
2. \(2x - 35 = 15\)
\(2x=15+35\)
\(2x=50\)
\(x=50\div2\)
\(x=25\)
3. \(3x + 17 = 12\)
\(3x=12-17\)
\(3x=-5\)
\(x=-5\div3\)
\(x=-1,7\)
4. \(\left|x-1\right|=0\)
\(x-1=0\)
\(x=0+1\)
\(x=1\)
5. \(-13.\left|x\right|=-26\)
\(\left|x\right|=-26\div\left(-13\right)\)
\(\left|x\right|=2\)
\(\Rightarrow x=\pm2\)
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Bình luận (2)
2. 2x - 35=15
2x =35 + 15
2x =50
x = 50:2
x =25
1, -16+23+x = -16
23+x = -16 - (-16)
23+x = 0
x = 0 - 23
x = -23
