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Which expression is equivalent to 
d-0.31+0.43 d ?

1.43 d-0.31

1.12 d

0.26 d

d+0.12

Which expression is equivalent to d0.31+0.43d d-0.31+0.43 d ?\newline1.43d0.31 1.43 d-0.31 \newline1.12d 1.12 d \newline0.26d 0.26 d \newlined+0.12 d+0.12

Full solution

Q. Which expression is equivalent to d0.31+0.43d d-0.31+0.43 d ?\newline1.43d0.31 1.43 d-0.31 \newline1.12d 1.12 d \newline0.26d 0.26 d \newlined+0.12 d+0.12
  1. Combine like terms: Combine like terms by adding the coefficients of dd.d0.31+0.43d=1d+0.43d0.31d - 0.31 + 0.43d = 1d + 0.43d - 0.31
  2. Add coefficients of d: Add the coefficients of d.\newline1d+0.43d=1.43d1d + 0.43d = 1.43d
  3. Subtract from final expression: Subtract 0.310.31 from 1.43d1.43d to get the final expression.\newline1.43d0.31=1.43d0.311.43d - 0.31 = 1.43d - 0.31
  4. Check for matching options: Check if the expression matches any of the given options.\newline1.43d0.311.43d - 0.31 does not match any of the options directly, so we need to check if we made a mistake in combining like terms.
  5. Re-evaluate combination of terms: Re-evaluate the combination of like terms.\newline1d+0.43d=(1+0.43)d=1.43d1d + 0.43d = (1 + 0.43)d = 1.43d\newlineSubtract 0.310.31 from 1.43d1.43d.\newline1.43d0.311.43d - 0.31 is the expression we obtained, but it seems we made a mistake because it does not match any of the options. We need to recheck our calculations.

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