Question

Simplifique e resolva as equações a seguir
a] 3(m+4)+8=2+m

b] 6x+14+3x=2x+158-x

c]20x+19-5x=7x+31+2x

d] 27z-15-3z=18z+185-2z

e] 7(m-14)+20=5(m+3)-15

f] 11(x+2)-410=2(2x-4)+89

Answer 1

a] 3(m+4)+8=2+m ==> 3m+12+8 =2+m ==> 3m-m=-20+2==> 2m= - 18 ==>m = - 9

b] 6x+14+3x=2x+158-x==> 9x-x = 158-14==>8x=144==>x=18

c]20x+19-5x=7x+31+2x==> 15x-9x=31-19==> 6x=12==>x = 2

d] 27z-15-3z=18z+185-2z==> 24z-16z=185+15==>8z=200==> z = 25

e] 7(m-14)+20=5(m+3)-15==>7m-98+20=5m+15-15==> 7m-5m=78==> 2m=78==>m=39

f] 11(x+2)-410=2(2x-4)+89==> 11x+22-410=4x-8+89==> 11x-4x=388+81
    7x = 469 ==> x = 67