A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 150lb and each box
1 answer:
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Sum means addition
negative 18 means -18
a number can be x
Sum of negative 18 and x should be 11
thus the equation is
negative 18 means -18
a number can be x
Sum of negative 18 and x should be 11
thus the equation is
Answer:
a=-8
b=-29
Step-by-step explanation:
Let's assume
first number is a
second number is b
the difference of two numbers,a and b,is 21
so, we get
we can solve for 'a'
the difference of five times a and two times b is 18
so, we get
now, we can plug 'a'
now, we can solve for b
now, we can find 'a'