Answer: 
Step-by-step explanation:
Subtract 15 from both sides.
Multiply by -8 to isolate a.
NOTE: When you multiply or divide by negative numbers, the inequality sign flips.
I don’t understand the question
7 1/20 as a decimal would be 7.05.
⓵
-4ỿ = 8
Simplify the left side in order to isolate the ỿ!
-4ỿ = 8
+4 +4
Ỿ = 12
⓶
× + 3y - 3z = -26
Simplify the left side in order to isolate the ×, ỿ and z!
× + 3y - 3z = -26
÷3 ÷3
× + ỿ - 3z = -8,66 periodic
÷-3 ÷-3
× + ỿ + z = 2,88 periodic
⓷
2× - 5ỿ + z = 19
Simplify the left side in order to isolate the ×, ỿ and z!
2× - 5ỿ + z = 19
÷2 ÷2
× - 5ỿ + z = 9,5
÷-5 ÷-5
× + ỿ + z = -1,9
For the first equation:
Let's solve for x.<span><span><span>2x</span>+y</span>=9</span>Step 1: Add -y to both sides.<span><span><span><span>2x</span>+y</span>+<span>−y</span></span>=<span>9+<span>−y</span></span></span><span><span>2x</span>=<span><span>−y</span>+9</span></span>Step 2: Divide both sides by 2.<span><span><span>2x/</span>2</span>=<span><span><span>−y</span>+9/</span>2</span></span><span>x=<span><span><span><span>−1/</span>2</span>y</span>+<span>9/2</span></span></span>Answer:<span>x=<span><span><span><span>−1/</span>2</span>y</span>+<span>9/<span>2
For the second equation:
</span></span></span></span>Let's solve for x.<span><span><span>8x</span>−<span>2y</span></span>=6</span>Step 1: Add 2y to both sides.<span><span><span><span>8x</span>−<span>2y</span></span>+<span>2y</span></span>=<span>6+<span>2y</span></span></span><span><span>8x</span>=<span><span>2y</span>+6</span></span>Step 2: Divide both sides by 8.<span><span><span>8x/</span>8</span>=<span><span><span>2y</span>+6/</span>8</span></span><span>x=<span><span><span>1/4</span>y</span>+<span>3/4</span></span></span>Answer:<span>x=<span><span><span>1/4</span>y</span>+<span>3/<span>4
Hope I helped!:)</span></span></span></span>
