Răspuns: [tex]\red{\Large\boxed{\bf a = 70}}[/tex]
Explicație pas cu pas:
[tex]\large\bf 98-36: [64-(3\cdot a + 40) : 5 +4]= 96[/tex]
[tex]\large\bf 98= 96 +36: [64-(3\cdot a + 40) : 5 +4][/tex]
[tex]\large\bf 98-96=36: [64-(3\cdot a + 40) : 5 +4][/tex]
[tex]\large\bf 2=36: [64-(3\cdot a + 40) : 5 +4][/tex]
[tex]\large\bf 2\cdot [64-(3\cdot a + 40) : 5 +4] =36~~~\bigg|:2[/tex]
[tex]\large\bf 64-(3\cdot a + 40) : 5 +4 =18[/tex]
[tex]\large\bf 64-(3\cdot a + 40) : 5 =18 -4[/tex]
[tex]\large\bf 64-(3\cdot a + 40) : 5 =14[/tex]
[tex]\large\bf 64=14+(3\cdot a + 40) : 5[/tex]
[tex]\large\bf 64-14 =(3\cdot a + 40) : 5[/tex]
[tex]\large\bf 50 =(3\cdot a + 40) : 5~~~\bigg|\cdot5[/tex]
[tex]\large\bf 250 =3\cdot a + 40[/tex]
[tex]\large\bf 250 -40 =3\cdot a[/tex]
[tex]\large\bf 210=3\cdot a~~~\bigg|:3[/tex]
[tex]\red{\Large\boxed{\bf a = 70}}[/tex]
#copaceibrainly
Răspuns:
98 – 36: [64 – (3 x a + 40) : 5 +4]= 96
36:[64-(3·a+40):5+4]=98-96
64-(3·a+40):5+4=36:2
64-(3·a+40):5=18-4
(3·a+40):5=64-14
3·a+40=50·5
3·a=250-40
a=210:3
a=70
