What is 10xy - (2y+x) when x=3 and y=7

If you want to evaluate 10*x*y - (2*y + x) and you know values of the x and the y (in this case, x = 3 and y = 7), you just have to insert these numbers instead of the x and the y.

So, 10*x*y - (2*y + x) equals to 10*3*7 - (2*7 + 3). Now, you have to multiply 10, 3 and 7 and you get 210. In the next step you have to multiply 2 and 7 (which is 14) and add 3 to this result. In the last step you have to subtract 17 from 210; 210 - 17 = 193.

The correct result is 193.

10 (3) (7) - (2[7]+3)

10 (21) - (14+3)

210-17

193