Answer:
-4x + 12 = 20 is incorrect. she added 12 to 20 instead of subtracting 12 from both sides.
Step-by-step explanation:
It should have been, write problem
-4(x - 3) = 20
Use distributive property.
-4x + 12 = 20
subtract 12 from each side
-4x =8
divide each side by -4
x = -2
(11)q/2+8
(13)9x
(15)9 + (y × 3)
7= 1
8= decimal : 0.00390625
try using symbolab.com
x=-119
23-x=142
-23 -23
-x=119
switch the signs
