Solve y = 4x – 17 3x + y = 4 with the substitution method

Step-by-step explanation:

y = 4x – 17(1)

3x + y = 4(2)

Substituting y = 4x - 17 in (2)

3x + 4x - 17 = 4

7x = 4 + 17

7x = 21

x = 21/7

x = 3

Putting x = 3 in equation (1)

y = 4x - 17

y = 4(1) - 17

y = 4 - 17

y = -13

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this