7 times the sum of a number and 4 exceeds 3 times that number by 17

Answer 1

7(x+4)=3x+17

7x +28 = 3x +17

4x = 17-28 =-9

x =-9/4

the number is -9/4 = - 2.25

check the answer

7(x+4)=

7(-9/4+4)

= 7(-9/4 +16/4)

= 7(7/4) = 49/4

= 12 1/4

3(x+17)=

3(-9/4)+17

= -27/4 +68/4

= 49/4

= 12 1/4