Question

A) 2b-6=15
B) 4m-7=2m-8
C) 5y-2+12=6y+4
D) m= -3(m - 4)
Helpe-me!!!!​

Answer 1

a) 2b - 6 = 15

2b = 15 + 6

2b = 21

b = 21/2 = 10,5

b) 4m - 7 = 2m - 8

4m - 2m = -8 + 7

2m = -1

m = - 1/2 = -0,5

c) 5y - 2 + 12 = 6y + 4

5y + 10 = 6y + 4

5y - 6y = 4 - 10

-y = -6 (.-1)

y = 6

d) m = -3(m - 4)

m = -3m + 12

m + 3m = 12

4m = 12

m = 12/4

m = 3