-1-2•[(-1)+5)} I am so lost on these math problems

-9

Step-by-step explanation:

Use the order of operations. Do these operations in this order:

Note: when either multiplication and division, or addition and subtraction are there, go left to right.

Equation: -1 - 2 · {(-1) + 5}

Solve:

*Challenge*

Using the same method, see if you can solve this equation:

6 ÷ 2(1+2)

-Chetan K

75 pounds

Step-by-step explanation:

(x) + (x) + (x+20) = 185

3x + 20 = 185

3x = 165

x = 55

Large dog = 55 + 20 = 75