At the market, 8 apples cost $4.How much do 9 apples cost?
2 answers:
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Answer:
4x + 3y = 5
Step-by-step explanation:
Given
y - 11 = - (x + 7)
Multiply through by 3
3y - 33 = - 4(x + 7) ← distribute
3y - 33 = - 4x - 28 ( add 4x to both sides )
4x + 3y - 33 = - 28 ( add 33 to both sides )
4x + 3y = 5