d/3+10=7will make brainiest to the first two people that answer correctly with explanation

Answer:D = -9Step-by-step explanation:Solve for D: D/3 + 10 = 7 Hint: | Put the fractions in D/3 + 10 over a common denominator. Put each term in D/3 + 10 over the common denominator 3: D/3 + 10 = D/3 + 30/3: D/3 + 30/3 = 7 Hint: | Combine D/3 + 30/3 into a single fraction. D/3 + 30/3 = (D + 30)/3: (D + 30)/3 = 7 Hint: | Multiply both sides by a constant to simplify the equation. Multiply both sides of (D + 30)/3 = 7 by 3: (3 (D + 30))/3 = 3×7 Hint: | Cancel common terms in the numerator and denominator of (3 (D + 30))/3. (3 (D + 30))/3 = 3/3×(D + 30) = D + 30: D + 30 = 3×7 Hint: | Multiply 3 and 7 together. 3×7 = 21: D + 30 = 21 Hint: | Isolate terms with D to the left hand side. Subtract 30 from both sides: D + (30 - 30) = 21 - 30 Hint: | Look for the difference of two identical terms. 30 - 30 = 0: D = 21 - 30 Hint: | Evaluate 21 - 30. 21 - 30 = -9: Answer:  D = -9