hopkinbr
29.12.2020 •
Mathematics
Seven times some number, added to 3, amounts to -25 added to the product of 3 and the number. Find the number.
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Ответ:
7x+3=-25+3x
minus 3 on both sides
7x=-28+3x
minus 3x both sides
4x=-28
divide 4 both sides
x=-7
the number is -7
Ответ:
5.7 square feet = 0.53 square meters
0.53 / 0.75 = 0.71
the smallest would be a)0.71