Let's remember orders of operations as we go through the craze of this problem. We need to multiply or divide from left to right. 3w-6w+3w×7×7×6×5÷9+2 3w-6w+21w×7×6×5÷9+2 3w-6w+147w×6×5÷9+2 3w-6w+882w×5÷9+2 3w-6w+4,410w÷9+2 3w-6w+490w+2 -3w+490w+2 487w+2 To check that we simplified the expression right, I like to put in 1 for w and test it in the original expression and then the simplified expression (not needed). 487+2=489 3-6+3×7×7×6×5÷9+2=489 So that expression equals 487w+2.
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