2x+3y=400 and 3x+2y=425 solve for x

trying substitution but keep getting fractions and neg numbers
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1 Answer

2x + 3y = 400 so

y = 400/3 - 2/3x

then in 3x + 2y = 425 so 3x + 2(400/3 - 2/3x) = 425

3x + 800/3 - 4/3x = 425

5/3x + 800/3 = 425

5/3x = 575/3

x=125
by Level 5 User (11.9k points)

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