Determine whether each expression is equivalent to or not equivalent to 5.7+9d.

6.8+(−2.5+11.5)d−1.1

(8.5d+0.5)+5.7

1.9+4.3d+3.8+4.7d

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

step-by-step explanation:

its 512 because parenthesis and to the 2nd power is 512 so it will be 512

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