Respuesta:
a. 2x+2=6x+14
-14+2=6x-2x
-12=4x
-3=x
b. 2a+4=-2a-28
28+4=-2a-2a
32=-4a
-8=a
c. 6k-20=8+2k
6k-2k=8+20
4k=28
k=7
d. a-18=9-8a
8a+a=9+18
9a=27
a=3
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Verified answer
Respuesta:
a. 2x+2=6x+14
-14+2=6x-2x
-12=4x
-3=x
b. 2a+4=-2a-28
28+4=-2a-2a
32=-4a
-8=a
c. 6k-20=8+2k
6k-2k=8+20
4k=28
k=7
d. a-18=9-8a
8a+a=9+18
9a=27
a=3