You can say

x+y=5
x=5-y

You know the value of x, put it into the next equation.

3(5-y)-7y=19
15-3y-7y=19
15-19 = 10y
-4=10y
-4/10=y
-2/5=y

Put y value back into either equation to find value of x.

x+y=5
x-2/5=5
x=5+2/5
x=27/5

Therefore, x,y = (27/5, -2/5)

Hope I helped :)

6 0

3 years ago

Graph this inequality on the number line. 2>3.2. TIHL -4 -3 -2 -1 0 1 2 3 4 1 > 0-> 1 3 4 N

postnew [5]

Answer:

See below

Step-by-step explanation:

Given inequality:

x > 3.2

Mark the point 3.2 with open dot and shade zone right to that point.

See attached

3 0

3 years ago

What is the quotient of x and three increased by 12 = 20

san4es73 [151]

Answer:

x= 24

Step-by-step explanation:

Quotient means divide, increased means add

x/3 + 12 =20

Subtract 12 from each side

x/3 +12-12 = 20-12

x/3=8

Multiply each side by 3

x/3 * 3 =8*3

x= 24

8 0

3 years ago

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