Question

Encuentra el valor de la incógnita

a)3(x+4)= -5x-36

b) 5(r+6)=-5(r-4)

c)9(m-6)=4(m+4)

Answer 1

3 (x + 4) = - 5x - 36

3x + 12 = - 5x - 36

3x + 5x = - 36 - 12

8x = - 48

x = -48/8

x = - 6
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5 (r + 6) = - 5 (r - 4)

5r + 30 = - 5r + 20

5r + 5r = 20 - 30

10r = - 10

y = -10/10

r = - 1
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9 (m - 6) = 4 (m + 4)

9m - 54 = 4m + 16

9m - 4m = 16 + 54

5m = 70

m = 70/5

m = 14