Question

write three solutions of the equation 4x -5x=15

Answer 1

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put x=1
4(1)-5(1)=15
4-5=15
-1=15
=16

put x=0
4(0)-5(0)=15
=15

put x=-1
4(-1)-5(-1)=15
-4+5=15
1=15
=16

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