punto 7: 2x = 7(x+1)-2
2x= 7x+7-2
2x-7x=+7-2
-5x=5
x=5÷-5
x= -1
Punto 8: 24+(-x+3)=12-2(9-2x)
-24x+72=12-18+4x
-24x-4x=12-18+72
-28x=66
x= 66÷28
x= -33/14
me
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Verified answer
punto 7: 2x = 7(x+1)-2
2x= 7x+7-2
2x-7x=+7-2
-5x=5
x=5÷-5
x= -1
Punto 8: 24+(-x+3)=12-2(9-2x)
-24x+72=12-18+4x
-24x-4x=12-18+72
-28x=66
x= 66÷28
x= -33/14
me