4x - 9 = 35 4x = 35 + 9 4x = 44 4x/4 = 44/4 x=11
16
3x = 7 - 4x 3x + 4x = 7 - 4x + 4x 7x = 7 7x/7 = 7/7 x = 1
If: 20x+5y = 15 Then: y = -4x+3
x 4HowThe starting equation is: 4x - 9 7To solve, first add 9 to both sides:4x 16Now, divide both sides by 4:x 4
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
4x + 6 = 34 Subtract 6 from both sides: 4x = 28 Divide both sides by 4: x = 7
4x = 72.divide both sides by 4x = 18
-12 (?)
-3
2y = 4x + 4y = 2x + 2
X is 6
x = 5
-4x-4 equals -16. Add 4 to both sides; -4x equals -12. Divide both sides by -4; x equals 3.
4x = 16Divide each side of the equation by 4:x = 4
3x + 7 = -4x + 28 implies 7x + 7 = 28
x = -7