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satela [25.4K]
3 years ago
12

i need help with number 7. its solving systems of equations by substitution. please show work!!! i need help

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
7 0
#7:
<span>Subtract </span>y<span> from both sides:
</span>-4x=6-y

Divide both sides by -4:

Answer:
x= -6-y/4


#7 part 2:

Add <span>y</span><span> to both sides:
</span>-5x=21+y

Divide both sides by -5:

Answer: x=-21+y/5

hope i helped!



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