Guest
asked 8 months ago
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Start with the questions:
3"X" + 7 = 9
Subtract 7 from each side of the equation (to keep both sides of the equation equal and to isolate the "X")
3"X" +7 -7 = 9 -7
Do the math:
3"X" = 2
Multiply both sides by whatever it takes to get the "X" to one (in this case, 3 = 3/1 so multiplying it times 1/3 would result in 3/3 which equals 1/1 -- so multiply both sides by the same 1/3 to keep both sides of the equation equal):
1/3 x 3/1"X" = 2 x 1/3
Do the math:
3/3"X" = 2/3
Reduce the fraction and you have solved for "X"
"X" = 2/3
(I used "X" -- a capital X in quotation marks -- in this example to distinguish it from just a plain ol x that is used to mean "multiply")
3"X" + 7 = 9
Subtract 7 from each side of the equation (to keep both sides of the equation equal and to isolate the "X")
3"X" +7 -7 = 9 -7
Do the math:
3"X" = 2
Multiply both sides by whatever it takes to get the "X" to one (in this case, 3 = 3/1 so multiplying it times 1/3 would result in 3/3 which equals 1/1 -- so multiply both sides by the same 1/3 to keep both sides of the equation equal):
1/3 x 3/1"X" = 2 x 1/3
Do the math:
3/3"X" = 2/3
Reduce the fraction and you have solved for "X"
"X" = 2/3
(I used "X" -- a capital X in quotation marks -- in this example to distinguish it from just a plain ol x that is used to mean "multiply")
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Guest
answered 8 months ago
Guest
answered 8 months ago
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