Question

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1)5.(x+1)+6.(x+2)=9.(x+3)

2)2x+3.(21-x) =48

Answer 1

1) 5*(x+1)+6*(x+2)=9*(x+3)
5x+5+6x+12=9x+27
5x+6x-9x=27-5-12
2x=10
x=10/2  x=5



2) 2x+3*(21-x)=48
    2x+63-3x=48
    2x-3x=48-63
     x=15