Question

Rezolvati ecuatiile
a) 2×X-1=4
b)5+4×X=13
c)14-2×X=5
d)4×X+12=19
va rog ajutatima
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Answer 1

Răspuns:

Explicație pas cu pas:

a) 2*x - 1 = 4  | +1

2*x = 4+1

2*x=5  | :2

x=5:2

x=2,5

b) 5+4*x = 13  | -5

4*x = 13-5

4*x = 8  | :4

x= 8:4

x=2

c) 14-2*x= 5 |+2*x

14=5+2*x |-5

14-5=2*x

9=2*x |:2

x=9:2

x=4,5

d) 4*x+12 = 19  | -12

4*x = 19-12

4*x = 7   |:4

x=17:4

x=4,25

Answer 2

Răspuns:

a) 2x-1=4

2×=5

x= 5/2

x=2.5

b) 5+4x=13

4x=13-5

4x=8

×=8/4

x=2

c) 14-2x=5

2x=14-5

x=9/2

x=4.5

d) 4x+12=19

4x=19-12

4x=7

x=7/4

x=1.75