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Solve the equation and check the result : 4(3y + 4) = 7.6 |
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Answer» Given 4(3y + 4) = 7.6. \(\frac {4(3y+4)}{4} = \frac {7.6}{4}\) (Divide by 4 on both sides) ⇒ 3y + 4 = 1.9 ⇒ 3y + 4 – 4= 1.9 – 4 (Subtract 4 on both sides) ⇒ 3y = – 2.1 ⇒ 3y/3 = - 2.1/3 (Divide by 3 on both sides) ⇒ y = – 0.7 Check: Substitute y = – 0.7 in 4(3y + 4) = 7.6 LHS = 4(3y + 4) = 4[3 (- 0.7) + 4] = 4[- 2.1 + 4] = 4 × 1.9 = 7.6 = RHS Hence verified. |
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