Answer:
38
Step-by-step explanation:
1) 1/2(10q-7q)
2) 1/2(10*9 - 7*2)
3) 1/2(90-14)
4) 1/2(76)
5) 38
firstly let us subtitute the values in the equation
1/2(10×9-7×2)
1/2(90-14)
1/2(76)
=38
