proszę o najszybsze rozwiazanne z góry dzięki
-3(5+2x)=15
30-10(2-3x)= -50
2(3x+4)-3(5x-6)+4(7x+8)=115
2(x-1)+4(x-3)=-3(x-2)+9x
- x+3 5x
_________ -1=3- ______
5 2
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2(3x+4)-3(5x-6)+4(7x+8)=115
6x+8-15x+18+28x+32=115
6x-15x+28x=115-8-18-32
19x=57/19
x=3
2(x-1)+4(x-3)=-3(x-2)+9x
2x-2+4x-12=-3x+6+9x
2x+4x+3x-9x=6+2+12
0x=20/0
x=0
-3(5+2x)=15
-15-6x=15
-6x=15+15
-6x=30/6
x=5
30-10(2-3x)= -50
30-20+30x=-50
30x=-50-30+20
30x=-60/(-30)
x=2
a co do piątego przykładu to niewiem