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Reptile [31]
4 years ago
12

I just need help on learning how to do ten and eleven thank you!

Mathematics
2 answers:
Mars2501 [29]4 years ago
6 0
11.2x+x+(x+8)=180
Combine like terms
3x+(x+8)=180
4x+8=180
180-8=172
4x=172
x=43

12.(x-3)+x+(x+8)+(x-5)=360
Combine like terms
4x-3+8-5=360
-3+8=5
5-5=0
4x=360
x=90

madreJ [45]4 years ago
4 0
Why is this in the college section?
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We know that
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3 years ago
Guys please help, ill give brainliest to the right answer
anygoal [31]

Answer:

Associative Property of Addition

Step-by-step explanation:

Here, in the second line, there are plus signs (+'s), indicating this is addition. But this time, unlike the first line, the numbers are grouped together with parentheses. When numbers are grouped with parentheses, it means it is the Associative property. Because we are adding, it's the associative property of ADDITION.

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3 years ago
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Step-by-step explanation:

4 0
4 years ago
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