Question

11.3x + 7.2 = 86.3 A) 0.7 B) 7 C) 8 D 8.3

Answer 1

11.3x + 7.2 = 86.3

11.3x + 7.2 (-7.2) = 86.3 (-7.2) 

11.3x = 79.1

11.3x/11.3 = 79.1/11.3

x =  7

7 is your answer

hope this helps