4x+10=6x -4x. -4x ——————- 10=2x — — 2x 2x = 5. The 2xs cancel out * the sum of 2 angles =90 degrees
B
5x+13 = 3x+7 Subtract 3x on both sides ( always the less amount gets subtracted ) 5x-3x =2x +13 3x-3x cancels out so you get +7 Now you have the equation 2x+13=7 -13 - 13 Subtract 13 to both sides ( opposite ) 2x = 6 Divide by 2 and your answer is 6.
