Question

Simplify: 15(x-9) -2 (x-12)+5(x+6)=0

Answer 1

Answer:

Step-by-step explanation:15x-135-2x+24+5x-30=0

15x-2x+5x-135+24-30=0

13x+5x-141=0

18x-141=0

18x=141

x=141/18

x=7.83

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Answer 2

15(x-9)-2(x-12)+5(x+6)=0

L.H.S= 15x-135-2x+24+5x+30

18x-81

Now let us compare the l.h.s and r.h.s

18x-81=0

18x=0+81

x=81/18

x=9/2 or 4.5

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