1.42
but this is smiple math you could use a calculator to do this you will get more accurate answers
3 divided by 4 plus 1 divided by 2 minus 2 divided by 3
4 divided by 2 is 2 - 1 is 1 x 3 is 3 plus 4 is 7
2/3+4/6=4/3
0.583333333
Division comes before addition, so 2 divided by 3 is 2/3, and 4 divided by 6 is 2/3, and 2/3 + 2/3 =4/3, which is 1 and 1/3.
12 divided by 4 plus 2 times 3 = 9
the answer is -0.126875
1.6667
3 1/3 or 3.33(repeating)
2/3 + 4/6 = 2/3 + 2/3 = 4/3 or 1 1/3
15
2/3=0.66666667 0.66666667+4=4.66666667 4.66666667/6=0.77777778