Explicación paso a paso:
a) 3x-2= 4
x=2
b) (2x+1)/3 + (3x+1)/4= 2x
8x+4+ 9x+3=24x
17x+7=24x
7=7x
x=1
c) 2x+2-10=0
2x-8=0
x=4
d) 16x+12-15x-21=0
x-9=0
x=9
e) 12x-54= 9x-12 -4x-14
12x-54= 5x-26
7x= 28
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Explicación paso a paso:
a) 3x-2= 4
x=2
b) (2x+1)/3 + (3x+1)/4= 2x
8x+4+ 9x+3=24x
17x+7=24x
7=7x
x=1
c) 2x+2-10=0
2x-8=0
x=4
d) 16x+12-15x-21=0
x-9=0
x=9
e) 12x-54= 9x-12 -4x-14
12x-54= 5x-26
7x= 28
x=4