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hehfnfifn
@hehfnfifn
July 2022
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а) 2(210-х)=х б) 2(180-х)=х+30
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1Bella11
A) 420-2x=x. 360-2x=x+30
420=x+2x. 360-30=x+2x
420=3x. 330=3x
x=420/3. x=330/30
x=140. x=10
1 votes
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tina6294
2 (210-х)=х
420-2х= х
-2х=х-420
-2х-х=-420
3х=-420
х=-420:(-3)
х= 140
0 votes
Thanks 0
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Answers & Comments
420=x+2x. 360-30=x+2x
420=3x. 330=3x
x=420/3. x=330/30
x=140. x=10
420-2х= х
-2х=х-420
-2х-х=-420
3х=-420
х=-420:(-3)
х= 140