Respuesta: Ojala te sirva, espero mi coronita
5. a + 3b = 120
6. 2x - 2 = 180
7. x + 2y = 24
8. 3x-6=2x+21
3x-2x=21+6
x=27
9. 6(7-x)=8(6-x)
42-6x=48-8x
42-48=-8x+6x
-6=-2x
-6/-2=x
3=x
10. 3/4 x 4 = 12/4 = 3
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Respuesta: Ojala te sirva, espero mi coronita
5. a + 3b = 120
6. 2x - 2 = 180
7. x + 2y = 24
8. 3x-6=2x+21
3x-2x=21+6
x=27
9. 6(7-x)=8(6-x)
42-6x=48-8x
42-48=-8x+6x
-6=-2x
-6/-2=x
3=x
10. 3/4 x 4 = 12/4 = 3