Question

Rezolvati ecuatiile :

a)3*x-18,25=13,89
b)9,57-5x+3,4=5,002
c)1,6*x-3,3=1,5
d)2,1*x-32,1=9,6


OFER COROANA + 25 P RAPID

Answer 1

a).3x=13,89+18,25
3x=32,14
x=10,71(3)

b)12,97-5x=5,002
12,97-5,002=5x
7,968=5x
x=1,5936

c).1,6x=1,5+3,3
1,6x=4,8
x=3

d).2,1x=9,6+32,1
2,1x=41,7
x=19.8571

Answer 2

a)3x-18.25=13.89⇒
3x=13.89+18.25⇒3x=32.14⇒x=32.14/3⇒x=10.71(3)

b)9.57-5x+3,4=5.002
12.97-5x=5,002⇒
-5x=-12.97+5.002⇒-5x=-7.968⇒x=-7.968/-5⇒x=1.5936

c)1.6x-3.3=1.5⇒1.6x=3.3+1.5⇒1.6x=4.8⇒x=4.8/1.6⇒x=3

d)2.1x-32.1=9.6⇒2.1x=9.6+32.1⇒2.1x=41.7⇒x=41.7/2.1⇒x=19.852

succes