SOLUTION: I am trying to solve x+3/10 = -2/5 I have tried working it with the addition principle. x+3/10 = -2/5 x + 3/10-3/10= -2/5-3/10 x = -5/10 However, the solution is said to be

Question 168310: I am trying to solve x+3/10 = -2/5
I have tried working it with the addition principle.
x+3/10 = -2/5
x + 3/10-3/10= -2/5-3/10
x = -5/10
However, the solution is said to be x= -7
-5/10 + 3/10 = -2/5
How does -7/10 - 3/10 = -2/5 ?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
multiply all terms by 10
subtract 3 from both sides

so the answer is not -7 but -7/10
remember -2/5 is the same as -4/10
so -7/10+3/10=-4/10
hope that helps

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