Question

Solve the equation and check the answer. 2y + 9 = 3 (3y + 10 )​

Answer 1

Step-by-step explanation:

let equation( i)

$2y + 9 = 3(3y + 10)$

$2y + 9 = 9y + 30$

$2y - 9y = 30 - 9$

$- 7y = 21$

$y = - \frac{21}{7}$

$y = - 3$

Value of y put in equation (i)

$2y + 9 = 3(3y + 10)$

$2( - 3) + 9 = 3(3 \times ( - 3 )+ 10)$

$- 6 + 9 = 3( - 9+ 10)$

$3 = 3(1)$

$3 = 3$

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