Can you please solve these math qustions? =]?

Question

please!? with the steps too =]]

2y + {7[3(2y-5)-(8y+7)]+9}

-3[9(x-4)+5x]-8{3[5(3y+4)]-12}

7b-{6[4(3b-7)-(9b+10)]+11}?

Answer 1

You just need to solve these like solving regular equations...

   2y + {7[3(2y-5)-(8y+7)]+9}

= 2y + {7[(3*2y-3*5)-8y+(-1)*7]+9}

= 2y + {7[6y-15-8y-7]+9}

= 2y + {7(-2y-22)+9}

= 2y + {-14y-154+9}

= 2y-14y-154+9

= -12y-145

You can solve the other 2 equations using similar method as above.