To solve these equations:
1) 430 - x = 72Subtract 430 from both sides-x = 720 - 43-x = 29Divide by -1 to solve for xx = -290
2) y + 380 = 72Subtract 380 from both sidesy = 720 - 38y = 340
3) 640 + x = 90Subtract 640 from both sidesx = 900 - 64x = 260
4) y - 760 = 52Add 760 to both sidesy = 520 + 76y = 1280
Therefore, the solutions to the equations are1) x = -292) y = 343) x = 264) y = 1280
To solve these equations:
1) 430 - x = 72
Subtract 430 from both sides
-x = 720 - 43
-x = 29
Divide by -1 to solve for x
x = -290
2) y + 380 = 72
Subtract 380 from both sides
y = 720 - 38
y = 340
3) 640 + x = 90
Subtract 640 from both sides
x = 900 - 64
x = 260
4) y - 760 = 52
Add 760 to both sides
y = 520 + 76
y = 1280
Therefore, the solutions to the equations are
1) x = -29
2) y = 34
3) x = 26
4) y = 1280