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find the value of x
1.4:x=8:4
2.2.5 =(x-7):30
3.4:9=(x+4):(2x+13)​


Sagot :

i know it the answer is i dont know

1. x = 2

2. x = 19

3. x = 16

Checking:

1.

4 x 4 = 16

2 x 8 = 16

2.

2 x 30 = 60

5 x 19 - 7

5 x 12 = 60

3.

4 x 2(16) + 13

4 x 32 +13

4 x 45 = 180

9 x 16 + 4

9 x 20 = 180