150-2[(3x15)+(2x10)]
The answer is 20. You would first do the two problems inside the parethesis and adding them, getting the answer of 65. Then multiply 2 and 65 to get 130. Finally, do 150-130.
150−2[(3)(15)+(2)(10)]=150−2(45+(2)(10)]=150−2(45+20)=150−(2)(65)=150−130=20