if the sum of twice a number and 40 is 80, what is the number?
i need the steps ASAP!
Answers
Answered by
7
Let the unknown number be x
→ First number = 2x
→ Second number = 4
→First number + Second number = 80
→ 2x + 4 = 80
→ 2x = 80 - 4
→2x = 76
→ 76=2
→x = 38
Answered by
2
Answer:
20
Step-by-step explanation:
let no be X
now a.t.q.
2(x)+40=80
2(X)=80-40
X=40/2
X=20
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