7x-10 = 3x+10 —> 4x-10 =10

Mathematics

1 answer:

erica [24]4 years ago

6 0

The Subtraction Property of Equality because you have to subtract 3x both sides and the answer is 4x-10 = 10.

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makkiz [27]

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Step-by-step explanation:

Perimeter: Add all the sides, so 120 units

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