Question

a) -3 (x+1)=2 (x+1)-75
b) 2 (x-1)=3(x+4)
c) 5 (x-2)-7 (x+4)
d)-3 (-5x+7)+8=4 (4x-5)-42
f)5 (-x+2)=-4 (2x-4)
vă rog dau coroana

Answer 1

 -3(x+1)=2 (x+1)-75
-3(x+1)-2(x+1)=75
(-3-2)*(x+1)=-75
-5(x+1)=-75
x+1=15
x=15-1
x=14


 2(x-1)=3(x+4)
2x-2=3x+12
2x-3x=12+2
-x=14
x=-14


 5(x-2)-7(x+4)
5x-10-7x-28
-2x-38 ( aici nuj cum dar ai scris gresit)


-3 (-5x+7)+8=4 (4x-5)-42
15x-21+8=16x-20-42
15x-13=16x-62
15x-16x=-62+13
-x=-49
x=49


5 (-x+2)=-4 (2x-4)
-5x+10=-8x+16
-5x+8x=16-10
3x=6
x=2