boo1561
boo1561
17-11-2017
Mathematics
contestada
Please help me on these please
Respuesta :
dannielle
dannielle
17-11-2017
7(x+2)=9(2x+1)
7x+14=18x+9
18x-7x=14-9
11x=5
x=5/11
2*5*(x+1)=3x
10(x+1)=3x
10x+10=3x
10x-3x=-10
7x=-10
x= - 10/7
4(x-1)=25(x-3)
4x-4=25x-75
25x-4x=75-4
21x=71
x=71/21
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