Question

Afla numarul necunoscut din egalitatile urmatoare: a)m+7×4=42, b)n-3×8=24, c)9×8-p=12, d)q-(100-93)×7=40, e)8×7+7×2-r=25, f) (18+16÷2+14)÷t=5.

Answer 1

a)m+7×4=42
m+28=42
m=42-28
m=14

b)n-3×8=24
n-24=24
n=24+24
n=48

c)9×8-p=12
72-p=12
p=72-12
p=60

d)q-(100-93)×7=40
q-7×7=40
q-49=40
q=40+49
q=89

e)8×7+7×2-r=25
56+14-r=25
70-r=25
r=70-25
r=45

f)(18+16:2+14):t=5
(18+8+14):t=5
40:t=5
t=40:5
t=8

sper ca te-am ajutat ☺

Answer 2

a) m+28=42, m=42-28, m = 14,
b) n- 24= 24, n= 24+24, n= 48,
c) 72- p= 12, p= 72- 12, p= 60,
d) q - 7x7= 40, q - 49 = 40, q = 40 + 49 = 89,
e) 56 + 14 - r = 25, r = 70 - 25, r = 45;
f) (18 + 8 + 14) : t = 5, 40 : t = 5, t = 40 : 5 = 8