Multiply the first equation by 3 to give 9x + 15y = 21
8x - 9 = 11x + 12 8x = 11x + 21 -3x = 21 x = -7
x = ab x = 21*37 x = 777
21
15 + 14 + 14 + 11 + 2x + x = 75 Collect like terms 54 + 3x = 75 Subtract 54 3x = 21 Divide by 3 x = 7 ■
21+21+19+19=80
The mathematical statement 31 plus 21 equals 52 as a total.
The statement 10 plus 21 equals 31 in total. It can also be written as 10 + 21 = 31.
12 plus 9 equals 21.
66.
273 13+8 = 21 and 13*21 = 273
5
The answer is 21 because if 21 is divided by 3 it equals 7 plus 4 equals 11.
21 + 10 = 31
identity
21
21