Answer:
Look at the explanation
Step-by-step explanation:
after the second line (4x-2x) +20= 2
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after the 3rd line
2x=2-20=-18
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after 4th line x=-18/2
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At the end
4(-9+5)=2(-9)+2
-36+20=-18+2
-16=-16 so it is right
