Question 572318
m=3n+23
4m+n=27
4(3n+23)+n=27
12n+92+n=27
13n=27-92
13n=-65
n=-65/13
n=-5
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4m+-5=27
4m=32
m=32/4
m=8
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8=3*-5+23
8=-15+23
8=8