The equations 2x+7=3 and bx-10=-2 have the same solution for x. Find the value of b.
1 answer:
Solve both equations for x:
2x+7 = 3
2x = -4
x = -2
Plug x into the equation which contains b:
b(-2) -10 = -2
-2b = 8
b = -4
Answer:
b = -4
x = -2
You might be interested in
Answer: x = 7
Step-by-step explanation:
2x - 6 = 8x - 48
+48
2x + 42 = 8x
-2x
42 = 6x
/6
7 = x
Answer:
wasdwa
Step-by-step explanation:
sdwasdwasd
Answer:
15=24
20=x
cross multiply
15x=24*20
15x=480
divide both sides by 15
x=480/15
x=32
it will take her 32 minutes
Answer:8(10+2)
8(10+2)
8×10=80
8×2=16
I hope this is good enough:
