isabellecannuli
isabellecannuli
18.01.2021 • 
Mathematics

Solve the system by substitution. Check your solution. a minus 1.2 b = negative 3. 0.2 b + 0.6 a = 12
a.
(15, 15)
c.
(13, 12)
b.
(10, 12)
d.
(7, 9)

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