Question

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Answer 1

1) x+20 = 12 ; x = 12-20 = -8 :

2) 6x = -54 ; x =-54:6 = -9 ;

3) x:(-3) = -12 ; x = (-3)x(-12) = 36 ;

4) 63:x = -7 ; x = 63:(-7) = -9 ;

5) -3x+1 = 16 ; -3x = 16-1 = 15 ; x = 15:(-3) = -5 ;