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Marianna [84]
3 years ago
7

Molly has 4x + $10 and Ron has 20 - 5 x dollars how much money do they have altogether and how much money does Molly have been R

on
Mathematics
2 answers:
Debora [2.8K]3 years ago
7 0
1. Do the opposite of addition (subtraction)

4x - 10 - (-5x + 20)

2. Change this equation (-5x - 20) into a positive (5x + 20)

4x - 10 + 5x - 20

9x - 10
pickupchik [31]3 years ago
6 0
Subtract them, just like you added: 
4x + 10 - (-5x +20) 
The minus turns (-5x + 20) into the opposite, or 5x - 20 
4x + 10 + 5x - 20 
9x - 10
I really hope this helps. 
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