In the form of algebra substitution is the method used in simultaneous equations.
E.g y=2x+5 and y=5x-1
Solve for x and y
Since we know two examples of what y is, we can substitute one y in replacement of the other to get.
2x+5=5x-1 then we solve for x to get:
x = 2 sub this back in to get y = 2(2) +5
y = 9
Answer:
810
Step-by-step explanation:
-21 + d = 789
d = 789+21
d= 810
No solution it’s c hope this helps and I hope you pass your final :)
Answer: 8/50
Step-by-step explanation:
simplified is 4/25
