Question

78 = -2(m + 3) + m. 0.6(y + 3) = 4.8

Answer 1

1) -2 (m+3)+m =78
2) 0.6(y+3)=4.8

from 1) m= -84 because:
$- 2m - 6 + m = 78 \\ - m = 78 + 6 \\ m = - 84$
from 2) y= because:
$0.6y + 1.8 = 4.8 \\ 0.6y = 4.8 - 1.8 \\ 0.6y = 3 \\ y = 3 \div 0.6 \\ y =5$
So; m= -84
And; y= 5




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