5 + (2 x 7) - (18/5) = 15.4
17
15 + 3 - 6 / 2 * 6 = 15 + 3 - 3 * 6 = 15 + 3 - 18 = 18 - 18 = 0
-1
4x + 20
3 divided by 4 plus 1 divided by 2 minus 2 divided by 3
(18/3) + 6 -(2 x 4) = 4
5 + (2 x 7) - (18/5) = 15.4
There is no need to simplify this, it is only a sum. 21 + (10/2) - 18 = 8
17
2
9 + 2 + 30 - 5 + 18 - 19 = -1
0.583333333
the answer is -0.126875
27
10
Doing it by the laws of mathematics, whereby the divisions and multiplications will be done first:6 + 18 ÷ 9 - 2 x 2 = 4