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Fynjy0
[20]
3 years ago
11
Solve the system of equations 2r + 2s = 50 and 2r – s = 17.
Mathematics
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answer:
WARRIOR
[948]
3 years ago
6
0
Eq1) 2r+2s=50
eq2) 2r-s=17
solve for s in equation2 (eq2)
-s=17-2r
s=-17+2r
Substitute s into equation1 (eq1)
2r+2(-17+2r)=50
2r-34+4r=50
6r-34=50
6r=50+34
6r=84
r=14
Substitute into either equation and solve for s
2(14)-s=17
28-s=17
-s=17-28
-s=-11
s=11
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