Question

Aflati solutiileecuatilor in multimea n
2x+5=34 9x+8=107 7x+140=420 8x+25=89 11x+135=300 15x+150=660

Answer 1

2x+5=34
2x=34-5
2x=29
x=29:2
x=14,5
9x+8=107
9x=107-8
9x=99
x=99:9
x=11
7x+140=420
7x=420-140
7x=280
x=280:7
x=40
8x+25=89
8x=89-25
8x=64
x=64:8
x=8
11x+135=300
11x=300-135
11x=165
x=165:11
x=15
15x+150=660
15x=660-150
15x=510
x=510:15
x=34

Answer 2

2x+5=34=>2x=34-5=>2x=29=>x=29:2=>x=14,5
9x+8=107=>9x=99=>x=99:9=>x=11
7x+140=420=>7x=280=>x=40
8x+25=89=>8x=64=>x=8
11x+135=300=>11x=165=>x=15
15x+150=660=>15x=510=>x=34