5a + 2 = 7 subtract 2 from both sides: 5a = 5 divide both sides by 5: a = 1
A+5=-5a+5 A=-5a+5-5 (bring one of the 5 over)(not necessary) A=-5a (if big and small letters are the same, A=a=0; if not, when A=35,a=-7)
(5a).7 = -23 7(5a) = -23 35a = -23 a = -23/35 a= -0.657 (3 d.p.)
4
If you mean: 6a+7 = 5a then the value of a is -7
5a+5=6a-7
7a + 4 = 5a + 7 7a = 5a + 3 2a = 3 a = 3/2
5a + 2 = 7 subtract 2 from both sides: 5a = 5 divide both sides by 5: a = 1
A+5=-5a+5 A=-5a+5-5 (bring one of the 5 over)(not necessary) A=-5a (if big and small letters are the same, A=a=0; if not, when A=35,a=-7)
(5a).7 = -23 7(5a) = -23 35a = -23 a = -23/35 a= -0.657 (3 d.p.)
4
If you mean: 6a+7 = 5a then the value of a is -7
2a+5a=3 7a=3 a=3/7 or .4286
Oh, come on! 6a - 5a = a, 7 - 5 = 2
5a - 1 = a - 7 4a = -6 a = -1.5
6-3a**2+7+4a-5a+18 3a**2-1a+31
5a - 5 = 7 + 2a ( subtract 2a from both sides) 3a - 5 = 7 (add 5 to both sides) 3a = 12 ( divide both sides by 3) a = 4