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Adolfosbaby
22.08.2019 •
Mathematics
Write the word sentence as an equation. a number k increased by 7 is 34.
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Ответ:
Increased represents addition. So you want to say: k+7=34.
Is =the equals sign
and by means that its addition or subtraction
Ответ:
x=0 and y=−2
keep scrolling it is kind of long
Step-by-step explanation:
−2x+2y=−4,3x−2y=4
−2x+2y=−4for x:
−2x+2y=−4
−2x+2y+−2y=−4+−2y
−2x=−2y−4
-2x/-2=-2y-4/-2
x=y+2
Substitute y +2 for x in3x−2y=4:
3x−2y=4
3(y+2)−2y=4
y+6=4
y+6+−6=4+−6
y=−2
Substitute −2 for y in x=y+2:
x=y+2
x=−2+2
x=0
x=0 and y=−2