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2010-01-24T18:50:51+01:00
4(x+3)=5x-19
4x + 12= 5x - 19
4x - 5x= -19 - 12
-x = -31// (-1)
x= 31

2(2m-3)+2m=5(3-m)+1
4m - 6 + 2m= 15 - 5m +1
4m + 2m + 5m= 1 + 15 +6
11m= 22 // 11
m= 2
2010-01-25T00:48:06+01:00
Rozwiąż równania:
4(x+3)=5x-19=
4x+12=5x-19
4x-5x=-19-12
-x=-31 /:(-1)
x=31


2(2m-3)+2m=5(3-m)+1=
4m-6+2m=15-5m+1
6m+5m=15+1+6
11m=22 /:11
m=2