Question

Detemine o valor x nos casos abaixos

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Answer 1

A)
Y=50-180           3x-15+130= 180
Y=130                 3x=180-130+15
                            3x=50+15
                            X=65/3
                            ×= 21.67(aprox)

B) 5x-15=4x+5
     5x-4x=5+15
     X=20

C)3x-20+x=180
     4x-20=180
     4x=180+20
     4x=200
      X=200/4
      ×=50

D) x=120

E)x=95

F) x+108=180
    ×=180-108
    X=72