2(×+4)=12
x+4=6
×=6-4
×=2
2(х+4)=12
2х+8=12
2х=4
х=2
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2(×+4)=12
x+4=6
×=6-4
×=2
2(х+4)=12
2х+8=12
2х=4
х=2