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Simplifying 6.8a + -7(3y + 4) = 0 Reorder the terms: 6.8a + -7(4 + 3y) = 0 6.8a + (4 * -7 + 3y * -7) = 0 6.8a + (-28 + -21y) = 0 Reorder the terms: -28 + 6.8a + -21y = 0 Solving -28 + 6.8a + -21y = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 6.8a + 28 + -21y = 0 + 28 Reorder the terms: -28 + 28 + 6.8a + -21y = 0 + 28 Combine like terms: -28 + 28 = 0 0 + 6.8a + -21y = 0 + 28 6.8a + -21y = 0 + 28 Combine like terms: 0 + 28 = 28 6.8a + -21y = 28 Add '21y' to each side of the equation. 6.8a + -21y + 21y = 28 + 21y Combine like terms: -21y + 21y = 0 6.8a + 0 = 28 + 21y 6.8a = 28 + 21y Divide each side by '6.8'. a = 4.117647059 + 3.088235294y Simplifying a = 4.117647059 + 3.088235294y
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