can someone help me please

Answer:
w = 2.1
Step-by-step explanation:
5w + 9.2 = 19.7
5w + 9.2 - 9.2 = 19.7 - 9.2
5w = 10.5
5w / 5 = 10.5 / 5
w = 2.1
Here is the check:
5w + 9.2 = 19.7
5(2.1) + 9.2 = 19.7
10.5 + 9.2 = 19.7
19.7 = 19.7