Do you mean: 3(3-3)(3+9)*3-3 ?
You must always calculate what's in the paranthesis first. Remember the order in arithmetics:
1. Calculate the things in the paranthesis.
2. multiply and divide (* and :)
3. Add and subtract (+ and -)
Ok we see that there are four factors: 3, 3, (3-3) and (3+9). We observe that 3-3 = 0. Therefore the product (answer in a multiplication) is 0:
3(3-3)(3+9)*3-3 = 0*3-3 = 0-3 = -3
Do you mean: 3(3-3)(3+9)*3-3 ?
You must always calculate what's in the paranthesis first. Remember the order in arithmetics:
1. Calculate the things in the paranthesis.
2. multiply and divide (* and :)
3. Add and subtract (+ and -)
Ok we see that there are four factors: 3, 3, (3-3) and (3+9). We observe that 3-3 = 0. Therefore the product (answer in a multiplication) is 0:
3(3-3)(3+9)*3-3 = 0*3-3 = 0-3 = -3
