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If X +9 equals 13, what is the value of X?

The vector matrix [2/7] is dilated by a favor of 1.5 and then reflected across the x axis. if the resulting matrix is [a/b] then a= and b=

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

5/6+7/8what is the answer sealsdbdbshd