Równania z 1 niewiadomą
a)0,5(30x+60) =14x+ 50
b)(9x-18)
Proszę chociaż o 1 przykład:)
a) 15x + 30 = 14x + 50
x = 20
b) 30x + 7 = 3x - 6
27x = -13
x = -13/27
0,5(30x+60) =14x+ 50
15x+30=14x+50
15x-14x=50-30
x=20
(9x-18) |*6
3(60x+14)=2(9x-18)
180x+42=18x-36
180x-18x=-36-42
162x=-78 |:162
x= -78/162
x= - 13/27
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a) 15x + 30 = 14x + 50
x = 20
b) 30x + 7 = 3x - 6
27x = -13
x = -13/27
0,5(30x+60) =14x+ 50
15x+30=14x+50
15x-14x=50-30
x=20
(9x-18) |*6
3(60x+14)=2(9x-18)
180x+42=18x-36
180x-18x=-36-42
162x=-78 |:162
x= -78/162
x= - 13/27