Question

x+60=149,95

 

resolver as equações

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 = 2 -20==> 2m= -18 ==> m= - 9

b)6x+14+3x+2x+158-x ==> 10x + 172

c)20x+19-5x=7x+31+2x ==> ==>20x-5x-7x-2x=+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