Question

exercícios equações 1 grau
resolva
a)X+7=15
B)X-9=9
c)2x+15=21
d)62+5x+110
e)x+20=30
f)40-30+2x=20
g)5x-8+10=3x+18
h)30x-20=50+20-30
i)5x=7x-10
j)3x+20-15=45+10-5
k)8x-26-34=12x+20
ajudem pfvr

Answer 1

Qual sua serie ? Serimo ou oitavo

Answer 2

a) X+7= 15
X= 15-7= 8

b) X-9= 9
X= 9+9= 18

c) 2X+15= 21
2X= 21-15
2X= 6
X= 6÷2= 3

d) 62+5X+110
5X= 110-62
5X= 48
X= 48÷5= 9.6

e) X+20= 30
X= 30-20= 10

f) 40-30+2X= 20
2X= 20-40+30
2X= 10
X= 10÷2= 5

g) 5X-8+10= 3X+18
5X-3X= 18+8-10
2X= 16
X= 16÷2= 8

h) 30X-20= 50+20-30
30X= 50+20-30+20
30X= 60
X= 60÷30= 2

i) 5X= 7X-10
5X-7X= 10
2X= 10
X= 10÷2= 5

j) 3X+20-15= 45+10-5
3X= 45+10-5-20+15
3X= 45
X= 45÷3= 15