Question

А)3х+7х+18=178 б)6у-2у+25=65 в)7z+6z-13z=130 г)21t-5t-17=17

Answer 1

а). 3х+7х+18=178

      3х+7х=178-18б

           10х=160

               х=16

 

б). 6у-2у+25=65

      6у-2у=65-25

           4у=40

             у=10

 

в). 7z+6z-13z=130

      0z=130

         z=0

 

г). 21t-5t-17=17

     21t-5t=17+17

        16t=34

          t=2.125

 

Answer 2

Вот решение!!!!!!!!!!!!!!!!!!!!!!!

Answer 3

A) 3x + 7x + 18 = 178 Combine like terms: 10x + 18 = 178 Subtract 18 from both sides: 10x = 160 Divide both sides by 10: x = 16

B) 6y - 2y + 25 = 65 Combine like terms: 4y + 25 = 65 Subtract 25 from both sides: 4y = 40 Divide both sides by 4: y = 10

C) 7z + 6z - 13z = 130 Combine like terms: 0z = 130 This equation has no solution because 0z will always be 0, so there is no value of z that will make this equation true.

D) 21t - 5t - 17 = 17 Combine like terms: 16t - 17 = 17 Add 17 to both sides: 16t = 34 Divide both sides by 16: t = 34/16 or t = 17/8