Question

*4x-7=5x-6/4 ...... x=2
*(x+2/3)=5x-4 ...... x=1 *(2x-10/3x-20)=7/8...... x=12​

Answer 1

Respuesta:

4x-7=5x-6/4 ...... x=2                      

4·2-7=5·2-6/4

8-7=10-6/4

1=10-6/4

1/1=10/1-6/4

../4=../4-../4

4/4=40/4-6/4

4/4=34/4

(x+2/3)=5x-4 ...... x=1                              

(1+2/3)=5·1-4

(1+2/3)=5-4

(1/1+2/3)=5/1-4/1

(../3+../3)=../3-../3

(3/3+2/3)=15/3-12/3

5/3=3/3

(2x-10/3x-20)=7/8...... x=12​

(2·12-10/3·12-20)=7/8

(24-10/36-20)=7/8

(24/1-10/36-20/1)=7/8

(../72-../72-../72)=../72

(1728/72-20/72-1440/72)=63/72

(1728/72-1460/72)=63/72

268/72=63/72

espero te sirva saludos ^^

M-