Question

resolva as equações

a) 10× - 8 = 20× + 10

b) 3× + 40 = 2× 10

c) 6 ( 2× + 10 ) = 3 ( 2× + 5 )

d) 7 ( 3× - 1 ) = 4 ( 2× + 6 )

e) 2×/4 + 1/8 = 3×/4 + 2/5

f) 5×/4 = 1/2

g) 3×/4 + 2/5 = 4×/6 + 1/2

h) 6 ( 2× + 6 ) ÷ 7 = 7 ( 3× - 1 ) ÷ 4

i) 7 ( 2× + 1 ) ÷ 4 = 2 ( 3× + 1 ) ÷ 2​

Answer 1

a)10×-8=20x+10

10×-20×=+10 +8

10×=18