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Furkat [3]
3 years ago
15

Help me please as soon as possible

Mathematics
2 answers:
Stella [2.4K]3 years ago
6 0
90+31= 121
3x-1+121=120
3x+120=180
-120
3x=60
Divide by 3 on both sides
X=20
Nookie1986 [14]3 years ago
4 0
X=15


90+31+3x-1=180
121+3x-1=180
120+3x=180
3x=60
X=15
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