2 years ago

Please Help 6-10 or just one of them

Mathematics

1 answer:

Free_Kalibri [48]2 years ago

5 0

Answer:

6) 20

7) I think is 2.5 (im not sure)

8) 7

Step-by-step explanation:

6) (5x+9)+(3x+11)=180

8x+20=180

-20 -20

8x=160

Divide 8 on each side

x=20

7) (17x+1)=(20x-14)

17x+15 =20x

+17 +17

15 = 37x

divide 15 on each side

X=2.5

8) (3x+3)+(10-4)=90

(3x)+(10x-1)

13x-`1=90

+1 +1

13x=91

Divide 13 on each side

x=7

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