Let Sara weight =x+25
amber wiegh =x
x+25+x=205
x= 90
Sara weight is 90+25= 115
Answer:
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Step-by-step explanation:
0=2x-4
-2x=4
x=-2
Step-by-step explanation:
21/20 = m/100
m = 100 * (21/20) = 105.
I don't think there is any difference, because 8-15=-7, and 8+(-15)=-7, because if you remove the parentheses, you will also get 8-15.
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