a) -5/2 - 1/2x = -19/5
1/2x=-5/2 - (-19/5)
1/2x=13/10
x=13/10:1/2
x=13/5
a)
\(-2,5-0,5\cdot x=-3,8\)
\(0,5\cdot x=1,3\)
\(x=2,6\)
b)
\(-5x-2^5=3x+2^3\)
\(-5x-3x=2^5+2^3\)
\(-8x=40\)
\(x=-20\)
c)
\(-1-\left|x\right|=-9\)
\(\left|x\right|=8\)
\(\Rightarrow x=8\) hoặc \(x=-8\)
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