Question

(7x-11)³=(-3)²x15+208=?

Answer 1

( 7x - 11 )^3 = ( -3 ) ^2 x 15 + 208

( 7x - 11 )^3 =      9 x 15 + 208

( 7x - 11 )^3 =     135 + 208 

( 7x - 11 )^3 =          343 

( 7x - 11)^3  =      7^3 

7x - 11 = 7 

7x       = 18

  x       = 18/7

Answer 2

(7x-11)³=(-3)²x15+208

(7x-11)³=9x15+208

(7x-11)³=135+208

(7x-11)³=343

(7x-11)³=7³

7x-11=7

7x=7+11

7x=18

x=18 : 7

x=18/7

Answer 3

(7x-11)^3=9x15+208=135+208=343=7^3

7x-11=7

x=11+7:7

x=18/7