Answer:
C choice.
Step-by-step explanation:

First, we move the same terms to the same side.

Then we move 6 to divide - 18.

72 people. Multiply 8 times one and a half, and then by six.
Answer:
A = 80
Step-by-step explanation:
B = 8
H = 10
Area of a Parallelogram = B x H = 8 x 10 = 80
If you put brackets around (2+1), your method of working is:
1) 15-4*(2+1)=3
2) 15-4*3=3
3) 15-12=3
You don't need any more brackets, as the BIDMAS (brackets, Indices, division, multiplication, addition, subtraction) rule does the rest of the job for you.
The answer is therefore: 15-4*(2+1)=3
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