x + 5 = 12 As there is + 5 so use opposite operation and add -5 on both sides. x + 5 = 12 - 5 = - 5 -------------------- x = 7 Check : For x = 7; Left side = 7 + 5 = 12 = Right side |
x - 5 = 12 As there is - 5 so use opposite operation and add +5 on both sides. x - 5 = 12 + 5 = + 5 -------------------- x = 17 Check : For x = 17; Left side = 17 - 5 = 12 = Right side |
4m = 16 As there is 4 times m so divide both side by 4. 4m 16 ---- = ----- 4 4 m = 4 Check : For m = 4 ; Left side = 4 x 4 = 16 = Right side. |
m ----- = 16 4 As there is m over 4 (division) So multiply both side by 4 m 4 x ------ = 16 x 4 4 m = 64 Check : For m = 64 Left side = 64 / 4 = 16 = Right side |