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a) 14(2x+1)=210 b)31(4x-7)=899 g)726=121(4x-514) j)12(13x+9)=192x m) 5(8x+2)=18(x+3)

Răspuns :

Renatemambouko
a) 14(2x+1)=210
28x+14=210
28x=196
x=7
b) 31(4x-7)=899
124x-217=899
124x=1116
x=9

g)726=121(4x-514)
726=484x-62194
484x=62920
x=130

j)12(13x+9)=192x
156x+108=192x
36x=108
x=3

m) 5(8x+2)=18(x+3)
40x+10=18x+54
22x=44
x=2

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