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It all depends on the math question but usually you solve for x, then check it. Plug x back in and see if it works. But it all depends on the math problem
36 and 48
a = b+12
a+b = 84
(b+12) + b =84
2b +12 = 84
2b = 72
b= 36
a = b + 12
a = 36 + 12
a = 48
Answer:
Add 2y and y.
Step-by-step explanation:
you have to combine what is common
plz give brainliest