Câu 4:
a: \(\Leftrightarrow-2x-x+17=34+x-25\)
=>-3x+17=x+9
=>-4x=-8
hay x=2
b: \(\Leftrightarrow17x+16x+37=2x+43\)
=>33x+17=2x+43
=>31x=26
hay x=26/31
c: \(\Leftrightarrow-2x-3x+51=34+2x-50\)
=>-5x+51=2x-16
=>-7x=-67
hay x=67/7
d: \(\Leftrightarrow17x-48x-111=2x+39\)
=>-31x-111=2x+39
=>-33x=150
hay x=-50/11
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