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Dafna11 [192]
3 years ago
12

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

Mathematics
2 answers:
Nikolay [14]3 years ago
7 0

Answer:

Its actually STEP 3

The person above is incorrect :/

defon3 years ago
4 0
The answer is step 3. Step 2 is suppose to be 3 x 7 and the answer is 21 but he writes 7 in step 4
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6 0
3 years ago
How do I do this problem???
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