shongmadi77
19.07.2019 •
Mathematics
Tracy solved the system of equations by making a substitution for x in the second equation. what equation did she get as a result of that substitution? x = –2y – 2 2x + 3y = –6 –2y – 2 = –6 –2y + 1 = –6 -4y – 2 + 3y = –6 –4y – 4 + 3y = –6
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Ответ:
II: 2x + 3y = –6
substitute I's x (x = –2y – 2) definition into II:
2*(-2y-2) + 3y = –6
-4y-4+3y=-6
which is the last option
Ответ:
false
Step-by-step explanation:
5-7=-2
-2 is not more than 13