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Mathematics for IGCSE & O level - Equations (Section 6 - No. 3)

If the equation is 2x - 3y = 7, and x = 4, what is the value of y?
-1/3
1/3
-1
2

Vysvětlení

Substitute x = 4 into the equation: 2(4) - 3y = 7 => 8 - 3y = 7 => -3y = -1 => y = 1/3.

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