1) 3x+4=25
3x=25-4
3x=21
x=21/3
x=7
2) 4x-20=8
4x=8+20
4x=28
x=28/4
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Answers & Comments
1) 3x+4=25
3x=25-4
3x=21
x=21/3
x=7
2) 4x-20=8
4x=8+20
4x=28
x=28/4
x=7