Question

{[(7×x-5)+2×6]:4+5}×10-[(4+6)×5-42]=112​

Answer 1

Răspuns:

{[(7×x-5)+2×6]:4+5}×10-[(4+6)×5-42]=112​

{[(7×x-5)+2×6]:4+5}×10-(10x5-42)=112

{[(7×x-5)+2×6]:4+5}×10-(50-42)=112

{[(7×x-5)+2×6]:4+5}×10-8=112

{[(7×x-5)+2×6]:4+5}×10=112+8

{[(7×x-5)+2×6]:4+5}×10=120

[(7×x-5)+2×6]:4+5=120:10

[(7×x-5)+2×6]:4+5=12

[(7×x-5)+2×6]:4=12-5

[(7×x-5)+2×6]:4=7

(7×x-5)+2×6=7x4

(7×x-5)+2×6=28

(7×x-5)+12=28

7×x-5=28-12

7×x-5=16

7×x=16+5

7×x=21

x=21:7

x=3

Answer 2

Răspuns:

• x = 3

Explicație pas cu pas:

{[(7×x-5)+2×6]:4+5}×10-[(4+6)×5-42]=112​

{[(7×x-5)+12]:4+5}×10-[10×5-42]=112​

{[((7×x-5)+12]:4+5}×10-[50-42]=112​

{[((7×x-5)+12]:4+5}×10-8 =112​

{[((7×x-5)+12]:4+5}×10=112​+8

{[((7×x-5)+12]:4+5}×10=120

[((7×x-5)+12]:4+5= 120:10

[((7×x-5)+12]:4=12-5

[((7×x-5)+12]:4=7

(7×x-5)+12 =7×4

(7×x-5)+12=28

7×x-5 = 28-12

7×x-5=16

7×x=16+5

7×x=21

x=21÷7

x = 3