Question

Rezolvati in R ecuațiile
a)5x-3=7
b)8-2x=5
c)√3x+2√3=7√3
d)7/3 x =14

Answer 1

a)5x-3=7
5x=7+3
x=10/5
x=2

b)8-2x=5
2x=8-5
2x=3
x=3/2

c)√3x+2√3=7√3
x+2=7
x=7-2
x=5

d)7/3 x =14
x/3=2
x=2*3=6

Answer 2

a)
5x-3=7
5x=10 (7+3)
×=10:5
×=2

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b)
8-2x=5
2x=3 (8-5)
x=3:2
×=1,5

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c)
$\sqrt{3x} + 2 \sqrt{3} = 7 \sqrt{3}$
x+2=7
x=5 (7-2)

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d)
7/3 x=14
x/3=2
x=6 (2×3)

Succes! :)