Question

5(2x-3)+3(5x-6)+13<8(3x-7)-63


7(4x-3)-4(3x+8)+25=<3(4x+9)-43

Answer 1

Explicație pas cu pas:

a)5(2x-3)+3(5x-6)+13<8(3x-7)-63

10x-15+15x-18+13<24x-56-63

25x-20<24x-119

25x-20-24x<-119

x-20<-119

x<-119+20

x<-99

b)7(4x-3)-4(3x+8)+25≤3(4x+9)-43

28x-21-12x-32+25≤12x+27-43

16x-28≤12x-16

16x≤12x-16+28

16x≤12x+12

16x-12x≤12

4x≤12

$x ≤ \frac{12}{4}$

x≤3