dylanmbrown2572
dylanmbrown2572 dylanmbrown2572
  • 02-10-2019
  • Mathematics
contestada

Help with 7 and 8 pls.

Help with 7 and 8 pls class=

Respuesta :

ilovepuppies250
ilovepuppies250 ilovepuppies250
  • 03-10-2019

Answer:

7.)  20     8.)  -117 / 11

Step-by-step explanation:

7.)   4/5 * 20 - 1/4x * 20 = 11 *20

            16x - 5x = 220

                11x =220

                  x = 20

8.)   - 0.55x - 0.45 = 5.4

  -0.55x * 100 * 0.45 * 100  = 5.4 * 100

  -55x - 45 = 540

-55x / -55  = 585 / -55

   x   = 117 / 11

   

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