-1
x-14=99 x=85 (I subtracted 14 from each side of the equation).
(4+5) - (2 x 3) = 3
No.Two matrices A and B can be added or subtracted if and only if they have the same number of rows and columns. That is a 3 x 2 matrix can be added or subtracted only with another 3 x 2 matrix.
A number: x (or any other convenient letter) Difference: use the minus sign, therefore x - 14 Triple this difference: 3(x-14)
(8 - x) - 11
-1
x-14=99 x=85 (I subtracted 14 from each side of the equation).
(4+5) - (2 x 3) = 3
No.Two matrices A and B can be added or subtracted if and only if they have the same number of rows and columns. That is a 3 x 2 matrix can be added or subtracted only with another 3 x 2 matrix.
A number: x (or any other convenient letter) Difference: use the minus sign, therefore x - 14 Triple this difference: 3(x-14)
19
14
3(x - 9) = 15 3x - 27 = 15 3x = 42 x = 14 Check it. 3(14 - 9) = 15 3 x 5 = 15 It checks.
3-2x=7 so -2x=4 and x=-2
It depends. Do you mean 3X as in 3 times X or do you mean 3 subtracted from X? (By the way, roman numerals are always capitalized) If you mean the former, then 3X is 30 which is equal to XXL (L being 50 and XX being the 20 subtracted from it). If you mean the latter, the 3X = 7 which is not equal to XXL or 30.
11