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cupoosta [38]
3 years ago
9

What’s is this one ????

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

\begin{array}{lll}1.&x+12.7=-25.5&\text{given}\\2.&x+12.7-12.7=-25.2-12.7& \text{subtraction property of equality}\\3.&x+0=-37.9&\text{additive inverse/simplification}\\4.&x=-37.9&\text{identity property of addition}\end{array}

Step-by-step explanation:

Solve the equation x+12.7=-25.2

1.  x+12.7=-25.2 - given

2. Subtract 12.7 from both sides:

x+12.7-12.7=-25.2-12.7 - subtraction property of equality

3. Since 12.7-12.7=0 and -25.2-12.7=-37.9, we have

x+0=-37.9 - additive inverse/simplification

4. Since x+0=x, we have

x=-37.9 - identity property of addition.

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