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jeka94
4 years ago
6

7x + 9 = 58 x/2 - 12 = -14 -3x + 33 = -12 8x + 16 = 8 2x - 2 = -18

Mathematics
1 answer:
masha68 [24]4 years ago
7 0

Answer: a) 7        b) -4         c) 15         d) -1        e) -8

<u>Step-by-step explanation:</u>

7x + 9 = 58

<u>      -9 </u>   <u> -9 </u>

7x       =  49

<u>÷7     </u>     <u> ÷7  </u>

  x      =   7

x/2 - 12 =  -14

<u>       +12 </u>   <u>+12 </u>

x/2       =   -2

<u>×2     </u>     <u>  ×2  </u>

  x      =    -4

-3x + 33 =  -12

<u>        -33 </u>   <u> -33 </u>

-3x         =  -45

<u>÷-3     </u>     <u> ÷-3  </u>

  x         =   15

8x + 16 =    8

<u>       -16 </u>   <u> -16 </u>

8x        =   -8

<u>÷8     </u>     <u>  ÷8  </u>

  x      =    -1

2x - 2 = -18

<u>      +2 </u>   <u>+2 </u>

2x       = -16

<u>÷2     </u>    <u> ÷2  </u>

  x      =  -8

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