Answer:
x=7.4
Step-by-step explanation:
2.4+x=9.8
(x=9.8-2.4)
x=7.4
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Answer:
$25.50
Step-by-step explanation:
15 percent off-> 85 percent is not off
therefore 0.85*30 is how you find the percent off
0.85*30=25.5
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(10x-20)= (6x+8) subtract 6 from each side
(4x-20)=(+8) add 20 to each side
(4x)=(28) divide both sides by 4
x= 7
