Answer:
Step-by-step explanation:
X+2x-5= 40
3x-5=40
+5=+5
3x=45
3x/3=45/3
X=15
Answer:
Step-by-step explanation:
The sum of two number is 40 would be:
[tex]x+y=40[/tex]
The second number is 5 less than twice the first number would be:
[tex]y=2x-5[/tex]
Now, we can find the value by solving this system of equations, we will isolate x in the first equation, then we replace it in the second equation:
[tex]x=40-y[/tex]
[tex]y=2(40-y)-5\\y=80-2y-5\\y+2y=75\\3y=75\\y=\frac{75}{3}=25[/tex]
Then, we replace this value in one equation of find the other variable:
[tex]x+25=40\\x=40-25\\x=15[/tex]
Therefore, the value of the first number is 15 and the second number is 25.
