Answer: d = 18
Explanation:
Answer:
d=15
Solve each equation.
Check your solution.
2d - 10 = 20
Add 10 to each side
2d-10+10 = 20+10
2d = 30
Divide each side by 2
2d/2 = 30/2
d = 15
Check the solution
2 ( 15) -10=20
30 - 10=20
20=20
Check
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