Question

Ecuatii:1) 2x+3x-4x+5=-2
2) 2(x+3)-4(x+1)=-x+3
3) -2x+5x-3x=-2
4)4x-5x+3x-2(x+3)=5
5)6x+3(x+2)=7
6)7(x+4)-x=2(x+3)
7)2x-4+3x-3=-2x+5
8)2x-3x=7x+5
9)x+3x-5(x+3)=2
10)x+3-x-3+2(x+3)=6.
Funda va rog sa ma ajutati

Answer 1

de ex la prima: faci operatiile pentru x: 5x-4x+5=-2, x+5=-2, x=-2-5, x=-7

Answer 2

1) x + 5 = -2 => x = -7
3) -6x = -2, poti inmulti cu -1 => 6x = 2 => x = 2/6 => x = 1/3
2) 2x+6 - 4x - 4 = -x+3 ( il muti pe x in stanga cu semn schimbat ) => -x+6 - 4 = 3
=> -x+2 = 3 => -x = 1, inmultesti cu -1 => x = -1
5) 6x+3x+6=7 => 9x=1 =>x= 1/9
6) 7x+28-x-2x=6 => 4x+28=6 =>4x=-22= =>x=-11/2
7)7x-4-3=5 => 7x=14 => x=2
8)-8x=5 => x= -5/8
9) x+3x-5x-15=2 =>-x-15=2 => x=-17
10) x+3-x-3+2x+6=6 => 2x+6=6 =>2x=12 => x=6