5x+n=3.8+4+1.2x n=-7 2.3y-6=1.8-1.7y+n n=4.2 1 1 2 1 - y+9+ - y = 1 - y+n n=10 2 6 3

Question

Математика: 5x+n=3.8+4+1.2x n=-7 2.3y-6=1.8-1.7y+n n=4.2 1 1 2 1 - y+9+ - y = 1 - y+n n=10 2 6 3

GloriaMare · Answer

1)5x-7=3.8+4-8.4     5x-7=-0.6     5x=6.4     x=1.28 2)3y-6=1.8-1.7y+4.2     4.7y=12     y=120/47 3) (3/2)y+9+(1/6)y=(5/2)y+10 (9/6+1/6-10/6)y+9=10 9=10 решений нет...

5x+n=3.8+4+1.2x n=-7 2.3y-6=1.8-1.7y+n n=4.2 1 1 2 1 - y+9+ - y = 1 - y+n n=10 2 6 3

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