а)7х+3х=4,532
10х=4,532
х=0,4532
б) 5,2х+2,1=0,2
5,2х=0,2-2,1
5,2х=-1,9
х=-19/52
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а)7х+3х=4,532
10х=4,532
х=0,4532
б) 5,2х+2,1=0,2
5,2х=0,2-2,1
5,2х=-1,9
х=-19/52