Question

C)2x=72

D)3x=10

E)2x+7

F)3x-46=102

G)2x+x=39

H)4x+5=2x+3

I)x/5=9

J)x/2+6/5=1/10

K)x/10+x/5+3/5

L)x/6+2+=/10+9

com contas pfv

Answer 1

Vamos lá

C) 2x = 72

x = 72/2 = 36

D) 3x = 10

x = 10/2

E) 2x + 7  incompleta

F) 3x - 46 = 102

3x = 102 + 46 = 148

x = 148/3

G) 2x + x = 39

3x = 39

x = 39/3 = 13

H) 4x + 5 = 2x + 3

4x - 2x = 3 - 5

2x = -2

x = -1

I) x/5 = 9

x = 5*9 = 45

J) x/2 + 6/5 = 1/10

5x/10 + 12/10 = 1/10

5x = 1 - 12

x = -11/5

K) x/10 + x/5 + 3/5

x/10 + 2x/10 + 6/10 = (3x + 6)/10

L) x/6 + 2 = x/10 + 9

10x/60 + 120/60 = 6x/60 + 540/60

4x/60 = (540 - 120)/60

4x = 420

x = 420/4 = 105