1) To find x in the first equation, we can set up a proportion:
8/9 = 3/4
Cross multiply to solve for x:
8 4 = 9 332 = 27
This is not true, so there is no solution for x in this equation.
2) To find x in the second equation, we can set up a proportion:
x/2.8 = 5/7
x 7 = 2.8 57x = 14x = 14/7x = 2
Therefore, x = 2 in this equation.
3) To find x in the third equation, we can set up a proportion:
12/7 = 9/x
12 x = 7 912x = 63x = 63/12x = 5.25
Therefore, x = 5.25 in this equation.
1) To find x in the first equation, we can set up a proportion:
8/9 = 3/4
Cross multiply to solve for x:
8 4 = 9 3
32 = 27
This is not true, so there is no solution for x in this equation.
2) To find x in the second equation, we can set up a proportion:
x/2.8 = 5/7
Cross multiply to solve for x:
x 7 = 2.8 5
7x = 14
x = 14/7
x = 2
Therefore, x = 2 in this equation.
3) To find x in the third equation, we can set up a proportion:
12/7 = 9/x
Cross multiply to solve for x:
12 x = 7 9
12x = 63
x = 63/12
x = 5.25
Therefore, x = 5.25 in this equation.