Răspuns :
Răspuns:
a) 2x+5=13/-5
2x=8/÷2
x=4
b) 4x+7=31
4x=24/÷4
x=6
a)
2x+5=13 <=>
<=> 2x=-5+13 <=>
<=> 2x=8/:2 <=>
<=> x=4
b)
4x+7=31 <=>
<=> 4x=-7+31 <=>
<=> 4x=24/:4 <=>
<=> x=6.
Răspuns:
a) 2x+5=13/-5
2x=8/÷2
x=4
b) 4x+7=31
4x=24/÷4
x=6
a)
2x+5=13 <=>
<=> 2x=-5+13 <=>
<=> 2x=8/:2 <=>
<=> x=4
b)
4x+7=31 <=>
<=> 4x=-7+31 <=>
<=> 4x=24/:4 <=>
<=> x=6.