Rezolvati ecuatile: a) x:1.5=0. (6) b) 3 supra 4 +x=5 supra 4 c) 7 supra 3

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avnedea

2024-05-01 20:22:54

Rezolvati ecuatile: a) x:1.5=0. (6) b) 3 supra 4 +x=5 supra 4 c) 7 supra 3 - x=un intreg 5 sesimi d) 8 supra 9 ×(2-x)=4 supra 3

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scsolardiaagro

2024-05-01 23:46:21

a) x:1.5=0. (6) x/1:15/10=6/9 x/1·10/15=6/9 10x/15=6/9 9·10x=6·15 90x=90 x=90/90 x=1 b) 3 /( 4 +x)=5/4 4·3=5(4+x) 12=20+5x 5x=12-20 5x=-8 x=-8/5 c) 7 /(3 - x)=11/6 7·6=11(3-x) 42=33-11x -11x=-33+42 -11x=9 (-1) x=-9/11 d) 8/ 9 ×(2-x)=4/ 3 8/(18-9x)=4/3 8·3=4(18-9x) 24=72-36x 72-36x=24 -36x=24-72 -36x=-48 (-1) x=48/36=8/6=4/3

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