Question

11 Rezolbati in Z ecutiile a) 3x+7=x+11
b) 0,5x+3=0,25x×4
c) 2×radical din 3+radical din 3 ×x=radical din 48

Answer 1

a)3x+7=x+11

3x-x=11-7

2x=4

X=2

b)0,5x+3=0,25x×4

0,5x+3=x

0,5x-x=-3

-0,5x=-3

-5x=-30

x=6

c)2√3+√x=√48

2√3+√x=4√3

√x=4√3-2√3

√x=2√3

(√x)^2=(2√3)^2

x=4×3

x=12