You have to use Orger of Operations, or BEDMAS (Brackets, Exponents, Division, Mulitplication, Addition, Subtraction).
And I'm not doing your Math Homework for you. Sorry.
Another contributor's answer:
15x+22 = 7x+62
15x-7x = 62-22
The x's and numbers have been collected together, notice the changes with the + and - signs. This is done to keep the equation in balance.
8x = 40
Divide both sides of the equation by 8 to find the value of x:
x = 5
-15x=-5*3x+2 -15x=-15x+2 +15x +15x ----------------- 0=2
9x + 7 = 15x + 1 ___-1_______-1 9x + 6 = 15x -9x_____-9x ____6=6x ____/6_/6 ____1=x x equals 1.
23 + 15x - 4x = 1215x - 4x = 12 -2311x = -11x= -1
its 10x +9y +1z
15x = -75, x = -5
X=-0.6
-15x=-5*3x+2 -15x=-15x+2 +15x +15x ----------------- 0=2
distributive
-3x + 6 + 15x =11x + 8 ie -3x + 15x - 11x = 8 - 6 ie x = 2
9x + 7 = 15x + 1 ___-1_______-1 9x + 6 = 15x -9x_____-9x ____6=6x ____/6_/6 ____1=x x equals 1.
hmm it would be -15x+12-8 so on this problem you just simplfy it would be -15x+4
23 + 15x - 4x = 1215x - 4x = 12 -2311x = -11x= -1
its 10x +9y +1z
15x = -75, x = -5
x is 12
The expression is 15x + 1732.
15x+25y = 315 25y = -15x+315 y = -0.6x+12.6 which is now in slope-intercept form