-9 you combine your like terms 5x and -3x and you get 2 then you subtract 8 on both sides and now you get 2x=-18 then u divide two on both sides the 2 crosses out so it is x then 2/-18 gets you a -9 so x=-9 if I’m wrong plz correct me
-(-7y + 12) = 7y - 12
u are distributing the -sign through the parenthesis...so u take the number outside of the parenthesis (and if it just a sign, the number is 1)...and u multiply it by everything in the parenthesis.
-1(-7y + 12) = -1 * -7y + (-1) * 12 = 7y + (-12) = 7y - 12
Answer:
$53.90
Step-by-step explanation:
30% of $77 = $77 * 30/100 = $77 * 0.3 = $23.10 (discount)
Regular price is $77, discount is $23.10, so the item is now
$77 - $23.10 = $53.90
Shorter way of solving this could be as follows:
The regular price is 100% of the price. If the item is on 30% discount, so it means now it worths 70% (which is 100% - 30%) of the regular price:
$77 * 70/100 = $77 * 0.7 = $53.90