Answer:
r = 4
Step-by-step explanation:
19 = 7 - -3r
19 = 7 + 3r
Then you do Inverse Operations So you have to Subtract
19 - 7 = 12
12 = 3r
Then you do Inverse Operation So you have to Divide
12/3 = 4
So
19 = 7 - -3(4)
So Let's Make Sure That It Is Correct
19 = 7 - -3(4)
19 = 7 - -12
19 = 7 + 12
So 4 Is The Correct Answer
