Solve the system:
10r-4t=6
7r +5t=12

t=1

r=1

Step-by-step explanation:

10r-4t=6   equation 1

7r +5t=12   equation 2

using equation 1 we have:

10r-4t=6  

10r = 6+4t

r= (6+4t)/10  equation 3

using equation 3 in equation 2 we have:

7((6+4t)/10)) +5t=12

4.2 + 2.8t  +5t =12

7.8t = 12-4.2

7.8t= 7.8

t = 7.8/7.8

t=1

so we have:

r= (6+4(1))/10

r= 10/10

r=1

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72