a = 4
10
x=4 y=x+3 y=4+3 y=7
3x+4 = 2x-3 3x-2x = -3-4 x = -7
If you would to solve for (l) then l = 4x/2 + 3/2 (4x + 3 is over 2).To solve for x. x = 2l/4 + 3/4 ( 2l + 3 is over 4)Hope this helps.
In math problems without punctuation such as brackets, the standard convention in to solve from left to right. Therefore, you would solve the problem 15-3 times 4 plus nine like by three actions. 15-3 equals 12; 12 times 4 equals 48; 48 plus 9 equals 57.
3x + 4= 7 3x= 7-4 3x/3 = 3/3 x=1
3x+5=4-2x+6 5x=4-1 5x=3 x=3/5
3 plus 1 plus 4 equals 8
4 plus 3 equals 7
6x+2y=4 gives y=2-(1/3)x
2x+3 = 7 2x = 7-3 2x = 4 x = 2