Bài 1:
a: =>4x=10
hay x=5/2
b: \(\Leftrightarrow-3x+x=9-7\)
=>-2x=2
hay x=-1
c: \(\Leftrightarrow2x-3+5x=4x+12\)
=>7x-4x=12+3
=>3x=15
hay x=5
d: \(\Leftrightarrow5-6+x=12-8x\)
=>x-1=12-8x
=>x+8x=12+1
=>9x=13
hay x=13/9
e: \(\Leftrightarrow4x+12+7x-17=0\)
=>11x-5=0
hay x=5/11
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