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Ciurearebeca14
a fost răspuns

Rezolvare in R urmatoarelor ecuatii
A)4(3x-7)=7x+2
B)2(4x-8)=5x+14
C)16-13x=7(8-4x)

Răspuns :

A)4(3x-7)=7x+2
12x-28=7x+2
12x-7x=2+28
5x=30
x=30:5
x=6

B)2(4x-8)=5x+14
8x-16=5x+14
8x-5x=14+16
3x=30
x=30:3
x=10

C)16-13x=7(8-4x)
16-13x=56-28x
-13x+28x=56-16
15x=40
x=40/15
x=8/3

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