9*7=8(y-6.6) i have no idea what to do.

-9*7=8(y-6.6)

You first begin with multiplying the left side in this case, and then you multiply the right side, so:

-9*7=8(y-6.6)

⬇

-63 = 8y -52.8
+52.8 +52.8
⬇

-10.2 = 8y

Divide both sides by 8, and you're left with:

y = -1.275

Hope this helps explain it a little.

7×7 is 49 I hope this helps