-55
5X + 7 = 42 subtract 7 from each side 5X + 7 - 7 = 42 - 7 5X = 35 divide both sides integers by 5 (5/5)X = 35/5 X = 7 ----------check in original equation 5(7) + 7 = 42 35 + 7 = 42 42 = 42 --------------checks
2x plus 6y equals 32 32 divided by 6= 5 R2 5+2= 7x6= 42-5=37-2=35 so X=5
42 72
9.2x+5x=35
5+x=42. 42-5=37 x=37
6x - 7 = 35 Therefore, 6x = 42 x = 42/6 x = 7
-55
15
6x=42 x=42/7 x=6
X=-35
2x - 13x + 42 = x +ax + b a + b = 2(x - 6.5x + 21) = 34 = a + b
33
5X + 7 = 42 subtract 7 from each side 5X + 7 - 7 = 42 - 7 5X = 35 divide both sides integers by 5 (5/5)X = 35/5 X = 7 ----------check in original equation 5(7) + 7 = 42 35 + 7 = 42 42 = 42 --------------checks
2x plus 6y equals 32 32 divided by 6= 5 R2 5+2= 7x6= 42-5=37-2=35 so X=5
42 72
If x+8 = 35 then x = 35-8 and so x = 27