Question

Me ajudem preciso pra Hj pfv!!

B)2×+3-8+9=

C)7×+8-9-10=5×

D)9×+15-30-10-1=6×

E)10×-20+30-10-1=6×

F)8×-9+10-15=6×

G)7×-15+20-30+10=5×

H)11×20+10-30+16+2=7×

I)12×30+40-50+60=

J)15×-45+20-15+10=5×

L)9×-19+20-8+7=4×

M)5×-10+20-9-2=3×

N)7×+20-30-40+10=3×

O) 9×+20-30+30-7=7×

P)3×+40-50+60-70=11×

Q)7×+8+9-9+10=5×

R)12×+11-11+20-30+15=2×

S)30×+20-30+40-50=15×

Answer 1

b)2x +3-8+9 = 

Vou resolver somente algumas questoes:

2x + 4 = 0
2x = -4
x = -4/2
x = -2

c)7x+8-9-10=5x
7x -5x -11 = 0
2x = 11
x = 11/2