You can put this solution on YOUR website! Establish variables
x = greater number
y = lesser number
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Given
x+y = 470
x = y + 90; rearrange as y = x - 90
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Substitute y into the first equation to solve for x, the greater number
x - 90 + x = 470
Combine like terms
2x - 90 = 470
Isolate x
2x = 470 + 90
Divide both sides by 2
x = is the greater number
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Confrim
y+90+y=470
2y = 470-90
2y=380
y = 190
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190+280 = 470 Great!!
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