Answer:
0=0
The input is an identity: it is true for all values
Explanation:
3 ( 4 − 7 ) = − 2 1 + 1 2
Solve
Distribute
3(4z−7)=−21+12z
1 2 − 2 1 = − 2 1 + 1 2
Rearrange terms
1 2 − 2 1 = − 2 1 + 1 2
1 2 − 2 1 = 1 2 − 2 1
add 2 1 to both sides of the equation
12 − 2 1 = 1 2 − 2 1
1 2 − 2 1 + 2 1 = 1 2 − 2 1 + 2 1
simplify
Add the numbers
12z = 12z
Subtract 12 from both side of the equation
1 2 = 1 2
12z- 12z= 1 2 − 12
Simplify, combine like Terms
0=0
Hope this helps.