решите уравнения
1) 5(x+16)=9x
2) 2(b+3)+4=5
3) 2/5(2x-3)=x-1/5
/ - знак дроби
1) 5(x+16)=9x
2) 2(b+3)+4=5
3) 2/5(2x-3)=x-1/5
/ - знак дроби
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Answers & Comments
5x-9x=-80
-4x=-80
-x=-80:4
-x=-20
x=20
2)2b+6+5=5
2b=5-5-6
2b=-6
b=-6:2
b=-3