3x=-21 20x =-5 8x+5=0 3x-7=2 11-4x=2x 8x-2=7+2x 3x+(4-6x)=18 6x(2x+5)=-4

3x=-21x=720x =-5x=-0,258x+5=08x=-5x=-5÷8x=-0,6253x-7=23x=2+73x=9x=311-4x=2x-4x-2x=-11-6x=-11x=-11/68x-2=7+2x8x-2x=7+26x=9x=9/63x+(4-6x)=183x+4-6x=18-3x=14x=-14/3