Answer:
-52.5 or -53
Step-by-step explanation:
Start by subtracting 18 from both sides. With you get 0.4=-21. Now divide 0.4 into both sides.
Answer:
x=-77.5
Step-by-step explanation:
since we're looking for x,18 must cross the equal sign to become negative.
0.4x=-13-18
0.4x=-31
dividing both side by 0.4,
we have x=-31÷0.4
therefore x= -77.5
