2007-09-16 16:31:54 · 5 answers · asked by yeahyeahyeah 4 in Science & Mathematics ➔ Mathematics
Just remember that you can do anything you like - add, subtract, multiply, divide etc - to the equation, provided whatever you do, you do *to both sides*.
So
8x+3 = 7x
so
8x+3 -7x = 7x -7x
so
x+3 = 0
so
x=-3
.
2007-09-16 16:38:15 · answer #1 · answered by tsr21 6 · 1⤊ 0⤋
X= -3
2007-09-16 16:41:56 · answer #2 · answered by Joshua V 2 · 1⤊ 0⤋
You want to get the x all by itself.
Subtract 7x from both sides 8x-7x + 3=7x-7x
that is x+3 = 0
Now subtract 3 from both sides x+3-3 = 0-3
that is x=-3 which is your answer
2007-09-16 16:36:05 · answer #3 · answered by Rich Z 7 · 1⤊ 0⤋
x= -3
2007-09-16 16:36:15 · answer #4 · answered by Kitty Assilem 3 · 1⤊ 0⤋
8x+3=7x
8x+3-3=7x-3 [subtracting 3 from both sides]
8x=7x-3
8x-7x=7x-3-7x[subtracting 7x from both sides]
x= -3
2007-09-16 16:37:53 · answer #5 · answered by alpha 7 · 1⤊ 0⤋