1. **State the problem:** Solve the system of equations to find the value of $y$:
$$4x + 19y = 25$$
$$7x + 14y = 30$$
2. **Use the elimination method:** We want to eliminate one variable by making the coefficients of $x$ or $y$ the same in both equations.
Multiply the first equation by 7 and the second by 4 to align the $x$ coefficients:
$$7(4x + 19y) = 7(25) \Rightarrow 28x + 133y = 175$$
$$4(7x + 14y) = 4(30) \Rightarrow 28x + 56y = 120$$
3. **Subtract the second new equation from the first:**
$$\cancel{28x} + 133y - (\cancel{28x} + 56y) = 175 - 120$$
$$133y - 56y = 55$$
$$77y = 55$$
4. **Solve for $y$:**
$$y = \frac{55}{77}$$
Simplify the fraction by dividing numerator and denominator by 11:
$$y = \frac{\cancel{55}^{5}}{\cancel{77}^{7}} = \frac{5}{7}$$
**Final answer:**
$$y = \frac{5}{7}$$
Solve System 240506
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