Answer:
9
Step-by-step explanation:
open the bracket, you will have
5x-2x+13=40
collect like terms
5x-2x=40-13
3x=27
divide both side by 3
3x/3=27/3
x=9
Answer: 9
5x-(2x-13)=40
Open bracket by -1
5x-2x+13. = 40
3x. = 40-13
3x. =. 27
Divide both sides by 3
x. = 27/3.
x. = 9
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