Question

Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. Hoe much did each of them earn?
A. Write a system of two equations to model this program.
I got 1 equation down, i just cant figure out the second
You know two things:

g+s = 425
g = s+25
S+g=425
g=s+25
subsisute
s+s+25=425
2s+25=425
subtract 25
2s=400
divide 2
s=200
subsisute
g=200+25
g=225


seiji=200
gavin=225
wear da speedos

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