Answer:
100
Step-by-step explanation:
When ...
x -15 = 30
we can find the value of x by adding 15 to both sides of the equation:
x = 45
To find the value of 2(x +5), we can substitute 45 for x:
2(x +5) = 2(45 +5) = 2(50)
2(x +5) = 100
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Alternate solution
Adding 20 to both sides of the first equation gives the value of x+5.
(x -15) +20 = (30) +20
x +5 = 50
The second expression is double this value:
2(x +5) = 2(50) = 100
