[SPLIT] 3x-5(3x-7)=2(x+9)=45

Takitia

New member
Joined
Jul 11, 2007
Messages
18
is this correct???

3x-5(3x-7)=2(x+9)=45
3x-15x-35=2x+18=45
12x-35=2x+63
14x-35+63
14x+28
X=2
 

Subhotosh Khan

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
18,135
Re: is this correct???

Takitia said:
3x-5(3x-7)=2(x+9)=45...the last = sign should be a + ..correct?

3x - 15x +[(-5)*(-7)] = 2x + 18 + 45

-12x + 35 = 2x + 63

35 - 63 = 2x + 12x

14x = -28

x = -2

____________________________________________________
3x-15x-35=2x+18=45
12x-35=2x+63
14x-35+63
14x+28
X=2
 

Takitia

New member
Joined
Jul 11, 2007
Messages
18
yes. :) thanks so much
 
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