I am doing my math homework and I am confused. Please help solves these questions and tell me what operation I should use? Is it order of operation or?
1)simplify8x8-8x5+7
2)simplfiy5-6x10-16
3)simplify 4x(4+2)/(1+2)
always order of operation.
I'd be happy to help you solve these math problems! It seems that you're primarily looking for guidance on which operation to use. Let's go through each question step by step:
1) The expression you provided is "8x8-8x5+7." To simplify this expression, we need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division - in the order they appear from left to right, Addition and Subtraction - in the order they appear from left to right).
However, in this case, there are no parentheses, exponents, or division operations. So, we can focus on the multiplication and subtraction/addition parts. To begin, we perform the multiplication: 8 multiplied by 8 is 64, and 8 multiplied by 5 is 40. Now we can rewrite the expression as: 64 - 40 + 7.
Next, we perform the addition and subtraction from left to right: 64 minus 40 is 24, and 24 plus 7 is 31. Therefore, the simplified answer is 31.
2) The expression is "5-6x10-16." Again, to solve this expression, we should follow the order of operations. We have subtraction and multiplication here, so we need to perform the multiplication first.
Let's begin with 6 multiplied by 10, which equals 60. Now we can rewrite the expression as: 5 - 60 - 16.
Next, we perform the subtraction from left to right: 5 minus 60 is -55, and then we subtract 16 from -55. The final result is -71. Therefore, the simplified answer is -71.
3) The expression you provided is "4x(4+2)/(1+2)." To simplify this expression, we can still use the order of operations. Since we don't have any exponents, we start with the parentheses.
Within the parentheses, 4 plus 2 equals 6. Now we rewrite the expression as: 4x6/(1+2).
Next, we perform the addition inside the parentheses: 1 plus 2 equals 3. Now we have 4x6/3.
Finally, we perform the division: 4 multiplied by 6 is 24, and then we divide 24 by 3. The final result is 8. Therefore, the simplified answer is 8.
I hope this explanation helps you understand the process of solving these math problems. If you have any further questions, feel free to ask!