Question

[(ax2+3)x4-5]:9=15

a:4:2:3+3x(96:4-21)=46

[(ax2-56)x2-56]x2-55
​

Answer 1

Heiii , nu stiu daca am fct corect dar sper ca este bine!

Răspuns:

[(2a + 3 )x4-5]:9 = 15| x9

(2a +3 )x4-5=135|+5

(2a+3)x4=140|:4

2a+3=10|-3

2a=7 |2

a=3,5

a:4:2:3+3x(96:4-21)=46|+21

a:4:2:3+3x24= 67

a:4:2:3 +72=67|-72

a;4:2:3=-5 |x3

a:4:2=-15|x2

a:4=-30|x4

a=-120

[(2a-56)x2-56] x2= 55|:2

(2a-56)x2-56= 27,5| + 56

(2a-56)x2=83,5|:2

2a-56=41,75|+56

2a=97,75|;2

a=48,875