Question

CALCULE O VALOR DA LETRA EM CADA ITEM:
A) A+38=57
B)23 × N=161
C)421- R=303
D)P:12=6
E)S- 98=124
F)210÷ X = 14

Answer 1

A+38=57 ------ A=57-38 = 29
23*N=161 ----  N=161/23=7
421-R=303 ---- R=421-303=118
S-98=124  ----  S=124+98=222
210/X=14 --- X=210/14=15

Answer 2

A)A+38=57

a=57-38

a=19

B)23•n=161

n=161÷23

n=7

C)421-r=303

-r=303-421(-1)

r= -303+421=+118

D)p:12=6

P=6•12

P=72

E)s-98=124

S=124+98

S=222

F)210:X=14

X=210:14

X=2.910

Vc tá no 6 ano neh?