Question

b) 3x2 la puterea 5:12+1=6 supra 5
c) 3 supra 7 = x supra 2x5 la puterea 3: 10-4
d) 7x2 la puterea 6:28-7 la puterea 0 supra x = 5 supra 2
e) 7 supra 5 = x supra 9x2 la puterea 5:12 + 3 la puterea 0
f) 8x5 la puterea 3: 20-5 la puterea 0 supra x = 7 supra 6

Answer 1

b) 3×32:12+1=6/5
96:12+1=6/5
3+1=6/5
4=6/5 Fals

c) 3/7=125x/2:10-4
3/7=125x/2×1/10-4
3/7=125x/20-4
25x/4=3/7+4 amplificãm pe 4 cu 7
25x/4=3/7+28/7
25x/4=31/7
25x=31/7×1/4
25x=31/28
x=31/28×1/25
x=31/700

d) 7×64:28-1/x=5/2
448:28-1/x=5/2
16-1/x=5/2
1/x=16-5/2 amplificãm pe 16 cu 2
1/x=32/2-5/2
1/x=27/2
x=27/2×1
x=27/2

e)7/5=x/9×32:12+1
7/5=32x/9×1/12+1
7/5=8x/27+1
8x/27=7/5-1 amplificãm pe 1 cu 5
8x/27=7/5-5/5
8x/27=2/5
8x=2/5×1/27
8x=2/135
x=2/135×1/8
x=1/540

f) 8×125:20-1/x=7/6
1000:20-1/x=7/6
50-1/x=7/6
1/x=50-7/6 amplificãm pe 50 cu 6
1/x=300/6-7/6
1/x=293/6
x=293/6×1
x=293/6