Answer:
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Step-by-step explanation:
the inverse of -18 is +18. +18 is less than 19
your missing some number to do the process
the first question you add all the sides
Answer:
# red marbles = 25
# blue marbles = 7
Step-by-step explanation:
r + b = 32
r = 4 + 3b
substitute '4 + 3b' for 'r' in the 1st equation
4 + 3b + b = 32
4 + 4b = 32
4b = 28
b = 7
red = 32 - 7
r = 25
