kitttimothy55
18.02.2022 •
Mathematics
Rewrite in simplest terms: 3(7u+4)-10(-4u+9)3(7u+4)−10(−4u+9)
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Ответ:
Numbers are 9 and 5
Step-by-step explanation:
x + y = 14
x - y = 4
Rewrite 1st equation
x = 14 - y
Put this into the other
14 - y - y = 4
14 - 2y = 4
14 = 4 + 2y
10 = 2y
y = 5
x + y = 14
x + 5 = 14
x = 9
Check answers both equations!!
9 + 5 = 14 Correct
9 - 5 = 4 Correct