5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1
3b - 7b - 2 = 26 then , -2 - 4b = 26 then , 4b = 26 then you do , -4 / 26 which equals 7
-7+3b = 4b-8 3b-4b = -8+7 -b = -1 b = 1
36 -20 = 16
a=2b 4b=6c becomes 2b=3c a=3c
5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
4b^2
-4b+2 = 18 -4b = 18-2 -4b = 16 b = -4
identity.
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1
4b - 1 = -4 + 4b + 3first, simplify and add together what you can.4b - 1 = -1 + 4b4b = 4bbecause 4b is always equal to 4b, the answer is infinite.
if i think of it, a=4b though a =20 so 20=4b 4 x 5=20 so b would equal five 4B/4=20/40 B=5 4(5)=20
3b - 7b - 2 = 26 then , -2 - 4b = 26 then , 4b = 26 then you do , -4 / 26 which equals 7
4a x 4b = 16ab Variables can be multiplied just like numbers.
-7+3b = 4b-8 3b-4b = -8+7 -b = -1 b = 1
36 -20 = 16