1.

Solve the equation and check the result : 4(3y + 4) = 7.6

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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