Question

2×{5×[2(x+2)+3(x+3)]-4}-195=427
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Answer 1

Explicație pas cu pas:

2*{5*[2(x+2)+3(x+3)]-4}-195=427

2*{5*[2(x+2)+3(x+3)]-4}=427+195

2*{5*[2(x+2)+3(x+3)]-4}=622.

5*[2(x+2)+3(x+3)]-4=622:2

5*[2(x+2)+3(x+3)]-4=311.

5*[2(x+2)+3(x+3)]=311+4.

5*[2(x+2)+3(x+3)]=315..

[2(x+2)+3(x+3)]=315:5

2(x+2)+3(x+3)=63

2x+4+3x+9=63

5x+13=63

5x=63-13.

5x=50

x=50:5.

x=10

Answer 2

2×{5×[2(x+2)+3(x+3)]-4}-195=427=

=2×[5×(2x+4+3x+9)-4]-195=427

=2×[5×(5x+13)-4]-195=427

=2×(25x+65-4)-195=427

=2×(25x+61)-195=427

=50x+122-195=427

=50x-73=427

=50x=427+73

=50x=500

=x=10