jazzycintron14
31.01.2021 •
Mathematics
7y-4y+2=
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Ответ:
3y + 2 =
Step-by-step explanation:
7y - 4y = 3y
3y and 2 are not like terms, so you can't add any further
Ответ:
x + y = 24 4x-2y = 66
since he only answered 24 questions
therefore max he can get is 96
x + y = 24
4x-2y = 66 from first equation,
y = 24-x plug that in second equation :
4x - 2(24-x) = 66
4x - 48 + 2x = 66
6x = 114
x = 19