[1] \( 2 m \times \) \( \square \) \[ =18 m n \] [1] \( 5 x \times \) \( \square \) \( =30 x^{2} \) [1] \( 4 w \times \) \( \square \) \( =16 w^{2} x \) [1] [1] \( 5 c \times \) \( \square \) \( =30 a c^{3} \) [2] [1] \( \square \) \( \times 3 w^{2} x=15 w^{3} x^{3} \) [2] [2] \( \square \) \( \times 4 a c^{2} e^{3}=20 a^{3} c^{3} e^{3} \) [2] Mark it
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To find the missing terms in each equation, you'll want to set up an equation based on what you have and what you need to equal. For example, in \( 2m \times \square = 18mn \), you would divide both sides by \( 2m \) to find that \( \square = \frac{18mn}{2m} = 9n \). Repeat this method for each equation, isolating the variable you need to find by rearranging as necessary. Common mistakes include forgetting to correctly cancel terms or misinterpreting expressions involving variables. Be careful with coefficients and ensure you simplify fully. For example, if you have \( 5x \times \square = 30x^2 \), forgetting to divide the 30 by 5 to isolate \( \square \) can lead you to an incorrect answer. Always double-check your algebra!