Me ajudem por favor!!! *7 pontos* >>>COM CÁLCULO<<<
a) 2(x+5) = 3(x+4)
-
b) 3(x-1) = 4 (x-7)
-
c) 6(x+3) = 2(x-8
-
d)8 (2x+1) = 20
-
e)3 (x+7) = 4 - 2(x+3)
-
f)4 (x-1) = 20-(x+3)
-
j)8x +3 (x+2) = 25
-
k)4- (x+4) = 10+3(3x+4)
-
l)4x- (x-3) = 2-3 (x+5)
Soluções para a tarefa
Respondido por
1
a) 2x+10 = 3x+12 2x-3x = -10+12 -1 x = 2 x = 2/-1 X = -2
b) 3x - 3 = 4x- 28 3x-4x = 3 - 28 - 1 x = -25 x = -25/-1 x = 25
c) 6x+18 = 2x-16 6x+18-2x=-16 6x-2x = -16 -18 x = -34/4 x = -17/2
d)16x+8 =20 x = 20- 8 /16 x = 12/16 x = 3/4
e) 3x +21 = 4 - 2x +6 3x+2x = -21+4+6 5x = -11 x = -11/5
f) 4x - 4 -20 = -(x+3 ) 4x +x = 20-3+4 5x - 12 = 4+ 20
5x= 4+ 20 +12 5x = 17+ 4 5x = 21 x = 21/5
j) 8x+ 3x+6 = 25 11x + 6 = 25 11 x = 25 -6 x = 19/11
k) 4−(x+4)=10+3(3x+4) −x=9x+22 −10x=22 x=−11/5
l) 3x+3=−3x−13 6x+3=−13 x = -8/3
b) 3x - 3 = 4x- 28 3x-4x = 3 - 28 - 1 x = -25 x = -25/-1 x = 25
c) 6x+18 = 2x-16 6x+18-2x=-16 6x-2x = -16 -18 x = -34/4 x = -17/2
d)16x+8 =20 x = 20- 8 /16 x = 12/16 x = 3/4
e) 3x +21 = 4 - 2x +6 3x+2x = -21+4+6 5x = -11 x = -11/5
f) 4x - 4 -20 = -(x+3 ) 4x +x = 20-3+4 5x - 12 = 4+ 20
5x= 4+ 20 +12 5x = 17+ 4 5x = 21 x = 21/5
j) 8x+ 3x+6 = 25 11x + 6 = 25 11 x = 25 -6 x = 19/11
k) 4−(x+4)=10+3(3x+4) −x=9x+22 −10x=22 x=−11/5
l) 3x+3=−3x−13 6x+3=−13 x = -8/3
desconhecido33:
nossa
Perguntas interessantes