perlacruz0505
23.10.2020 •
Mathematics
Which eqution has an infinite number of solutions?
A. 3x - 2(x + 10) = x - 20
B. 5x + 2(x - 3) = 5x + 2( 3 - x)
C. x/2 + 1 = 3x/10 + 3
D. 7/2 x + x = 7/4
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Ответ:
X<-15
Step-by-step explanation:
-3x-42>3 collect like terms
-3x>3+42
-3x>45 divide both side by -3
X<-15
Hint ; when you divide both side by a negative sign, the sign changes.