86 + x = 7 (X-12)

86 + x = 7 (X-12)


arrangement:
86+x=7x-84
6x=170
x=85/3
Test: left = 86 + 86 / 3 = 343 / 3
Right = 7 * (85 / 3-12) = 343 / 3
Left = right
So x = 85 / 3



(X-12):8=(X-7):


(X-12):8=(X-7):18
18(x-2)=8(x-7)
18x-36=8x-56
18x-8x=36-56
10x=-20
x=-2



How to solve the equation of 12 + 1.5x = 18 + X in grade five


12+1.5x=18+x
1.5x-x=18-12
0.5x=6
x=6÷0.5
x=12



How to solve the equation of 7.2 / (x + 0.38) = 8


7.2/(x+0.38)=8
x+0.38=7.2÷8
x+0.38=0.9
x=0.9-0.38
x=0.52