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10x - 15y = - 70
3x - 5y = 15
Equation 1 is in the correct format.
Equation 2 is in the correct format.
3x - 5y = 15
3x - 5y + 5y = 15 + 5y
3x = 15 + 5y
3x | |
3 |
= |
15 + 5y |
3 |
x = | 15 + 5y |
3 |
10(x) - 15y = -70
10 * ((15 + 5y)/3) - 15y = -70
((150 + 50y)/3) - 15y = -70
3 * (((150 + 50y)/3) - 15y = -70)
3 * (((150 + 50y)/3) - 15y = -70)
150 + 50y - 45y = -210
50y - 45y = -210 - 150
5y = -360
5y | |
5 |
= |
-360 |
5 |
y = | -360 |
5 |
y = -72
10x - 15(-72) = -70
10x + 1080 = -70
10x = -70 - 1080
10x = -1150
10x | |
10 |
= |
-1150 |
10 |
x = | -1150 |
10 |
x = -115
Math is always fascinating! Have you noticed? On the path to discovering the ultimate mysteries of math, we move forward with small steps.