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lara31 [8.8K]
3 years ago
8

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics
2 answers:
Blababa [14]3 years ago
6 0
I think its step 3 but i dont sure sorry
Tomtit [17]3 years ago
4 0
It is step 3 because 3(y+7) = 3y+21, so the 3 wasn't distributed to ALL of the values on the parentheses.
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Solve 30 = −5(6n + 6), justifying each step with an algebraic property.
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4 years ago
What is the slope of the graph of y=-3X?<br><br> 3<br> 1<br> 3<br> 1<br> -3
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oee [108]

Answer:

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Will mark brainliest !!
ikadub [295]

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