Question

Resolva
A) 4-2×=×+31

B) 5×-3+×=3×-2-1

C) 5×+21=10×-19

D) ×++2×7×-2×=96

Answer 1

a) 4-2x = x+31

-2x-x = 31-4

-3x = 27

x = -27/3

x = -9

b) 5x-3+x = 3x-2-1

5x+x-3x = -2-2+3

3x = -1

x = -1/3

c) 5x+21 = 10x-19

5x-10x = -19-21

-5x = -40

x = 40/5

x = 8

d) x+2x+7x-2x = 96

8x = 96

x = 96/8

x = 12

❤️ Bom final de semana ❤️

11/06/22