Answer:
a-8x+21y-10=19
b-3(x-6y)=6
c-(15-12)=4
Step-by-step explanation:
y=-4-3x
y = -3x - 4
y = -3x + (-4)
y = -4 + 3x
y = -4 - 3x
1500
you multiply 30x50
