- 2а + 3b = 18
3a + 2b = - 1
••••••••
2a = 3b - 18
a = 1,5b - 9
3( 1,5b - 9 ) + 2b = - 1
4,5b - 27 + 2b = - 1
6,5b = 26
b = 4
a = 6 - 9 = - 3
Ответ ( - 3 ; 4 )
4=√16
3√2=√18
2√6=√24
--------------
√15, √16, √17, √18, √24
√15, 4, √17, 3√2, 2√6
<span>{9x+5y-1=0 *3
{2x+3y-8=0 *(-5)
{27x+15y-3=0
{-10x-15y+40=0
------------------------
17x+37=0
x=-37/17=-2 3/17
y=(1-9x)/5=(1+9*37/17)/5=350/(17*5)=70/17=4 2/17
ответ (-2 3/17; 4 2/17) точка пересечения</span>
3x + 4y = 7
5x - 4y = 9
------------------- +
8x = 16
x = 2
y = (7 - 3x)/4 = (7 - 6)/4 = 1/4
ОТВЕТ
( 2; 1/4)