Answered

Which of the following equations is equivalent to 2.15x + 7.8 = 25 ?
A. 215x + 780 = 2 500
B. 215x + 780 = 250
C. 215x + 78 = 2 500
D. 215x + 78 = 25

Sagot :

Jordanbland03viz
[tex] 2.15x + 7.8 = 25 \\ 2.15x=25-7.8 \\ 2.15x=17.2 \\ x=17.2/2.15 \\ x=8[/tex]


[tex]A. 215x + 780 = 2 500 \\ 215x=2500-780 \\ 215x=1720 \\ x=1720/215 \\ x=8 [/tex]

Answer is A.