2 (3;5)
3 5/8
Объяснение:
2 4x-7= -2x+11
4x+2x=11+7
6x = 18
x = 18÷6
x = 3
y= 4×3-7=5
y=5
3 (2x-3)(5x+1)=(x+2)(10x-9)
10x²+2x-15x-3=10x²-9x+20x-18
10x²+2x-15x-10x²+9x-20x=-18+3
-24x=-15
x=-15÷(-24)
x=15/24
x=5/8
