Question

va rog e urgenttt!!!​

Answer 1

Răspuns:

1)

a)879+363:11-25x36=

879+33-900=

912-900=12

b)16x16-975:75-9x27=

256-13-243=

243-243=0

c)15x18-490:70-261=

270-7-261=

263-261=2

d)56x72:126+222-88=

4032:126+222-88=

32+222-88=

254-88=166

2)

A=9

B=63

A<B

3)

(12x24)+(ax18)=828

288+(ax18)=828

ax18=828-288

ax18=540

a=540:18

a=30

Answer 2

Răspuns:

Explicație pas cu pas:

2.

A=(25)^27:(25)^26-(1+0+1)^4=25-2^4=25-16=9

B=2^7-11{91-5[22-5(40²-41·39)]}+(9-8)^2017=

=128-11{91-5[22-5(1600-1599)]}+1

=128-11[91-5(22-5)]+1==128-11(91-5·17)+1=129-11(91-85)=129-11·6=

=129-66=63

A=9    si B=63   ⇒B>A

3.

828=12·24+18·n

828=288+18n        18n=828-288           18n=540     ⇒n=30cutii mari

1.

a)879+363:11-25·36=879+33-900=912-900=12

b)16²-975:75-9·27=256-13-243=256-256=0

c)15·18-490:70-261=270-7-261=270-268=2

d)56·72:126+222-88=32+222-88=254-88=166