Question

b) 4ax+3bx-2cx=80si 4a+3b=2c+16; c) 2x+a²+ab+ac=60si a=4,b+c=8; vreau rezolvarea urgenta la aceste 2 exerciti va rog frumos !

Answer 1

4ax+3bx-2cx=80  si 4a+3b=2c+16
x (4a+3b-2c)=80
x (2c+16 -2c)=80
x *16=80
x=80 : 16
x= 5
 
2x+a²+ab+ac=60si a=4,b+c=8
2x + a( a+b+c)= 60
2x+4*(4+8)=60
2x+4*12=60
2x+48=60
2x=60-48
2x=12
x=12 : 2
x=6