Question

Sum of a number and 7is 45 . Find the number

Answer 1

Answer:

let the number be X

7+x=45

X=45-7

x=38. ANS

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Answer 2

Answer:

38

Step-by-step explanation:

1. Write an equation. Let x be the unknown number. The question says x and 7 equals 45. x+7=45
2. Isolate the variable (x). Subtract 7 from both sides. That will cancel the +7 on the left side and make the right side 45-7. x=38
3. Check your work. Plug your answer into the x in the original equation. (38)+7=45

x=38 is CORRECT