Answer:
Your answer is b
Step-by-step explanation:
Here you go mate
Step 1
21=14+7x Equation/Question
Step 2
21=14+7x Simplify
21=14+7x
Step 3
21=14+7x Subtract 14x
7x=7
Step 4
7x=7 Divide by 7
answer
1
Hope this help
