The operation used in the problem is Multiplication property of equality and the value of x is -14
Property of equality
-3.5 = x/4
- 3.5 × 4 = x
-14 = x
Check:
-3.5 = x/4
- 3.5 = -14 / 4
-3.5 = -3.5
Therefore, the operation used in the problem is Multiplication property of equality and the value of x is -14
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