U could easily do this on Photo-math- but here: 6(x−3)
a is given to us so just plug a into the first equation:
b-3 - 3b =9
Add 3 to both sides:
b-3b=12
Combine like terms:
-2b=12
Divide by -2 to get b by itself:
b=-6
The only answer with b as -6 is the first one, (-9,-6)
Answer:
I think its b but im not sure
Step-by-step explanation:
<span>42x - 7y = 7(6x - y)
</span>
<span>I hope this helps</span>