Hey!
-3x+40=130
-3x=130-40
-3x=90
x=90/-3
x=-30
-3×=130-40
x= -90
3
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Hey!
-3x+40=130
-3x=130-40
-3x=90
x=90/-3
x=-30
-3x+40=130
-3×=130-40
-3x=90
x= -90
3
x=-30