Question

please solve these 3 eqation​

Answer 1

Answer:

-14

Step-by-step explanation:

9y-5(2y-3)=1-2y

⇒9y-10y+15=1-2y

⇒-1y+15=1-2y

⇒-1y+2y=1-15

∴y=-14

Answer 2

Answer:

xiv. m-m/4=7/2+m/4

     m-m/4-m/4=7/2

     (4m-m-m)/4=7/2

     2m/4=7/2

     m/2=7/2

     2m=14     (cross multiplication)

      m=7

xvi. 3(n-1)=2n-11

     3n-3=2n-11

     3n-2n=-11+3

     n=-8

xvii. 9y-5(2y-3)=1-2y

      9y-10y+15=1-2y

      15-y=1-2y

      -y+2y=1-15

       y=-14

Please mark me as the brainliest